Less Wrong members sometimes arrange meetups to meet each other in meat space. Some geographic areas have groups that do this regularly. This list also includes some virtual/online meetups. See also Less Wrong meetup group resources.

Related listings elsewhere:





USA

Albany, NY

Weekly meetings, announced on mailing list: Less Wrong NY Capital Region

Ann Arbor, MI

The Ann Arbor Area Amalgam of Rationalist-Adjacent Anthropoids has a Google mailing list and website.

Meetings every other Saturday, from 16:00 until about midnight. Usually near downtown Ann Arbor.

Last updated: 21 January 2017

Atlanta, GA

Inactive

Facebook Group

Last updated: 15 July 2017

A new group is now active as SSC Atlanta

SSC Atlanta

Last updated: 26 September 2019

Austin, TX

Venue: Central Market (for now, check back for possible changes), on Saturdays at 1:30pm.

Mailing List: Austin Less Wrong

Last updated: 15 March 2017

Baltimore, MD

Meets every Sunday evening at 20:00

Meetings are on the top floor of the Performing Arts and Humanities Building at UMBC

Email us to be added to the mailing list.

Last updated: 27 November 2016

Bay Area, CA

There is an umbrella site at BayRationality.com for finding local rationalist people and events. This site is not currently being updated and some information may be out of date.

Mailing list: BayAreaLessWrong

Berkeley

Meets every Thursday evening at 7pm

Meetings are at the Berkeley REACH, at 3045 Shattuck Ave, Berkeley (first floor)

For meetup announcements, see the Bay Area Less Wrong mailing list.

Last updated: September 1, 2018

San Francisco

Generally meetups happen on Mondays at 6pm; location varies

Meetups are announced on the Bay Area Less Wrong mailing list

Contact: rocurley or maia.

Last updated: 15 July 2017

South Bay / Mountain View

South Bay Effective Altruism

Two Tuesdays per month in downtown Mountain View

Other South Bay meetups might be announced on the Bay Area Less Wrong mailing list.

Last updated: 27 May 2019

Marin

Has not had a meet up in a while

Mailing list: lw-sf

Stanford

Boston, MA

meetup.com group

Meets at 3:30pm on the 1st and 3rd Sunday of the month, at the Citadel rationalist house (98 Elm St Apt 1, Somerville, MA)

Buffalo, NY

Buffalo LW meets irregularly to play games and have discussions. Visit the FB group page for up to date information. The Facebook group also acts like a nice portal for sharing thoughts and asking questions, so feel free to join even if you don't think you can attend meetups.

Facebook Group

Contact: Email Buffalo LW

Last updated: 25 July 2017

Chicago, IL

Effective Altruism Chicago Irregular meetings Effective Altruism Chicago, UChicago Effective Altruism



Last updated: 15 July 2017

Columbus, OH

Columbus Rationality is on hiatus. Gatherings of rationalists still occur - to get connected to the community contact AdAstra.

Columbus Rationality is a very active group. We hold workshops every 1st and 3rd Monday of the month at 7:30 PM, in the HCCO office. We sometimes hold social gatherings on the 5th Monday of the month.

Meetup page (posted under HCCO umbrella): [2]

Facebook group: [3]

Contact: AdAstra

Last updated: 3 May 2017

Denver, CO

Meets the first Tuesday of every month at 7 PM at 5151 E Yale Cir, Denver CO 80222. It's the club house area on the ground floor of an apartment complex, open directly to the outside/public.

Contact: Email Steven Zuber

Last updated: 16 September 2017

Fort Lauderdale, FL

Meetings every Saturday 6pm-9pm

Location: map

Contact: Stuart David

Last updated: 24 July 2017

Las Vegas, NV

Contact azerner3 [at] gmail [dot] com if interested.

Last updated: 4 June 2017

Los Angeles, CA

We meet up at 7 pm every Wednesday at the Wine Bar next to the Landmark Theater in the Westside Pavilion (10800 W Pico Blvd #312, Los Angeles, CA 90064). Please join our google group and request an invite to the google hangout for topic discussion/etc.

Mailing List: Less Wrong Southern California Announcements

Facebook group (not very active; Google Group is primary channel of communication)

Calendar: SoCal LW Meetups

Last updated: 15 July 2017

Madison, WI

LessWrong Madison (inactive) Last known event: 20 June 2015 LessWrong Madison mailing list, Facebook group

(inactive)

Last updated: 21 April 2017

New Hampshire

Meets twice/month on the second and fourth Tuesdays of each month at 7 pm at a private residence in Manchester.

Contact: Elizabeth Edwards

Facebook group: [4]

Last updated: 30 August 2017

New Haven, CT

New York City, NY

The NYC meetup group is very large and meets frequently. The NYC community was profiled here as a case study. Please join the mailing list!

Weekly, Tuesday, usually 7-11pm, Most often Private Residence, but varies (check mailing list)

Mailing list: Main Google Group

Philadelphia, PA

LessWrong Philadelphia meets irregularly. Join the mailing list to find out about upcoming meetups. We also have a Facebook group.

Philly Political Agnostics: rational, non-partisan discussion of politics; draws heavily from LW & SSC. Find out about upcoming meetups at the meetup.com page

Last updated: 10 September 2017

Phoenix, AZ

We meet irregularly on weekends at Hayden Library (In the middle of Arizona State University's Tempe Campus)

Contact: Danny_Hintze

Pittsburgh, PA

Currently inactive

Mailing list: Pittsburgh Less Wrong

Last update: 24 July 2017

Portland, OR

Lacking leadership and active meetups as of August 2015

Mailing list: LessWrong Portland

Facebook group

Research Triangle, NC (Raleigh/Durham/Chapel Hill)

Mailing list: Research Triangle Less Wrong

Research Triangle LessWrong meetups are generally scheduled during the evening of the 1st, 3rd, and 5th Thursdays of each month. To be notified of future meetups (or to call one yourself!) please join the (very low-volume) RTLW Google group or keep an eye on our calendar.

Last updated: 24 July 2017

Salt Lake City, UT

Last updated: 25 July 2017

Seattle, WA

The Seattle LW+Disaspora community is relatively active and has ~50 members. Events are organized through several venues:

Seattle Rationality has a weekly sequences reading group at the University of Washington.

Seattle Effective Altruists meets about monthly at libraries in central and north Seattle.

Seattle MIRIx and Friendly AI research meets sporadically, usually at private homes.

Other infrastructure:

Seattle Effective Altruists Meetup page (mostly mirror of facebook group)

LW-Seattle Mailing list, now mostly defunct.

There is a slack channel with 10k+ posts, come to a reading group to get the info.

Washington, DC

Canada

Toronto, ON

Organization: Check on meetup.com

Typical Venue: Libraries or people's homes

Schedule: Thursdays

Contact: Giles Edkins [5] or Tuxedage [6]

All meetups are announced and organized on meetup.com.

Waterloo

LessWrong Waterloo has been on hiatus for several years, but there has been recent interest in restarting the group. Join the Google Group to find out more.

Mailing list: Waterloo Google Group

Last updated: 25 July 2017

Ottawa

Previous meetups have included presentations on books and discussions on HPMOR.

Mailing list: Ottawa Google Group

Meetup.com site: Less Wrong Ottawa will no longer be advertised on Meetup.com, though related Ottawa Skeptics pub events will cover the same interest group. If you are interested in RSVP'ing for the LW meetups, you can send a private message to user Swimmer963.

Nova Scotia

Venue: Private residence

Contact: [7]

Vancouver

We meet every week, usually somewhere in Kitsilano or downtown.

We do most of our organizing on the VanLWmeetup Facebook group and have a mailing list: Vancouver Rationalists

Montreal

Time: varied

Frequency: at least once per week

Venue: the Macroscope

Groups: Facebook group, (the Google group is deprecated)

Contacts: Mati Roy (and Facebook or mathieu.roy.37@gmail.com)

Meetups Content: CfAR-inspired exercises, games, social meetups, celebrations, movie night, and other.

Last updated: 15 January 2018

Other relevant groups: Montreal Artificial Intelligence Ethics and Safety, Montreal Effective Altruism, Montreal Alliance for Rationalist Sharehouses (MARS), Montreal Cryonics

Europe

Vienna, Austria

Facebook group[8]

Meets every month

Contact Ratcourse to be added to the mailing list

Brussels, Belgium

This group is dead. If you would like to restart it, the Meetup.com group still exists.

The Brussels meetup group wiki page serves as a testament to the fact that there once was something here.

Last updated: 30 August 2017

Croatia

Last updated: 1 August 2017

Prague, Czech Republic

Contact kotrfa

Discussion and announcements at Facebook group

Website (inc. google calendar)

Schedule: every two weeks

Brno, Czech Republic

Copenhagen, Denmark

Inactive since 2015

Mailing list: less-wrong-copenhagen

Last updated: 25 July 2017

Helsinki, Finland

Paris, France

Berlin, Germany

Website: http://www.lesswrong.de

Mailing list: lw-berlin

Contact spuckblase or blob

Schedule: at least once per month, usually biweekly

Cologne, Germany

Meetings are coordinated on the mailing list; there is also a very small Facebook group

Contact: caffemacchiavelli

Schedule: monthly, decided via Doodle poll (see mailing list)

Last updated: 1 August 2017

Frankfurt/Mainz, Germany

Mailing list: less-wrong-frankfurt

Contact: Kendra

Schedule: Irregular

Hamburg, Germany

Mailing list: [9]

Contact: [10]

Schedule: possibly bi-weekly, alternating Friday and Saturday/Sunday

Munich, Germany

Meetup announcements on Meetup.com

Discussion and announcements (partly in German) also in Facebook group.

Schedule: Monthly (usually first weekend in the month, see announcements)

Budapest, Hungary

Venue: California Coffee Company Basilica (coffee shop), Szent Istvan ter 4-5. Link

Schedule: weekends, see mailing list.

Mailing list: BudLessWrong

Contact AlexeyM or katyusha

Milano, Italy

Rationality Milano Find us on Facebook and Meetup, or email Marco to get involved.







The Netherlands

LessWrong Netherlands LW Netherlands meets every two weeks, on Sunday at 13:10 at Coffee Company Treub at Meester Treublaan 18, 1097 DP Amsterdam, Netherlands. Find us on Facebook and meetup.com, or email Tim to get involved.



SlateStarCodex Amsterdam SSC Amsterdam meets monthly at Cafe Batavia, Prinshendrikade 85. To accommodate people with different schedules, we alternate between holding meetups on Wednesdays and Saturdays. In odd-numbered months, meetups are held the first Saturday of the month at 5 PM. In even-numbered months, meetups are held the first Wednesday of the month at 7 PM. Facebook group



Last updated: 4 August 2017

Kraków, Poland

LessWrong Krakow Mailing list, LW Krakow Facebook group Schedule: recently Thursdays at 6.30 pm, but check the above mailing list for updates

Effective Altruism Krakow Facebook group



Poznan, Poland

Mailing list: https://groups.google.com/d/forum/less-wrong-poznan

Facebook: https://www.facebook.com/groups/lw.poznan/

Schedule: Sundays at 6 - 8 pm, but check mailing list or fb page for up-to-date info

Contact: mail

Warsaw, Poland

Moscow, Russia

Schedule: biweekly Sunday meetups, dojos on Fridays, sequences reading on Mondays. Find out more on the LessWrong.ru wiki

Contact: me@berekuk.ru

Links: Mailing list vkontakte website Hackpad LessWrong in Russian

If you want to start meetup group in another Russian city, feel free contact us, we will help with anything we can.

Last updated: 1 August 2017

St. Petersburg, Russia

Bratislava, Slovakia

Madrid, Spain

Effective Altruism and Rationality FB group: [13]

Contact: jsevillamol, pvs

Regular meetups beginning March 2017. If you would like to attend, please contact us.

Newcomers to the rationality community/ people who want to know more about rationality specially welcome.

Last updated: 9 Feb 2018

Stockholm, Sweden

Meetups posted on meetup.com

Influence times and topics

Last updated: 21 April 2017

Zurich, Switzerland

Meetups happen irregularly, coordinated in the closed Facebook group

Rationality Zurich Facebook group

Email

Last updated: 1 August 2017

Kiev, Ukraine

Bath, UK

Inactive

Facebook group

Bristol, UK

Rationality Cafe and Effective Altruism

A Philosophy Reading Group (Online)

https://www.meetup.com/a-philosophy-reading-group/

Enjoy discussions for amateur philosophers focussed on particular readings

Cambridge, UK

Schedule: Irregular times and places -- join the mailing list to see when something's going to happen, or to suggest a meetup.

Mailing list: CambridgeLessWrong

London, UK

Oxford, UK

As of September 2019, we're hoping to meet monthly, probably at The Gardener's Arms. See OxfordRationalish Facebook page for details

Previously:

Oxford Rationality Meetups

Venue: Exeter College

Schedule: Saturday termtimes - normally 6-8pm.

Contact Larks or AlexFlint for details.

Australia

Online

Australia-wide online meetups approximately once per month (currently on a Sunday around the middle of the month). Announced on the Less Wrong site and on the Facebook groups for Sydney and Melbourne. Upcoming meetups in 2015 are unplanned but are roughly bi-monthly.

Brisbane

Brisbane has not yet had an in-person meetup but they are growing as a facebook group, when we have enough interest we will organise a meetup. Brisbane Facebook group

Canberra

Weekly on a Thursday 5-7pm. We alternate between a social week (boardgames, chatting etc) Then a more structured week. Venue: Room 3.39 of the Hancock Library: [14]

Facebook group: Less Wrong Canberra

Records of previous meetups: [[15]]

Melbourne

Rationality Dojos on the second Sunday of each month, usually held at the Henley Club in the central CBD (unless otherwise announced through our usual channels).

Social Meetups on the fourth Friday night of each month, at a writer bar in the CBD.

We often organise impromptu social outings and excursions.

See our facebook group or mailing list for event details:

Last updated: 7 April 2017

There is also Effective Altruism Melbourne: Meetup and Facebook. Activities have included regular co-working sessions (approx twice per month in late 2017).

Perth

Sydney

General meetup on the fourth Wednesday of the month. Will include a combination of social and rationality-improvement exercises.

Rationality dojo on the first Sunday of the month. Focused on rationality improvement talks and exercises.

Irregular social meetups (whenever we come up with a good excuse) usually a fortnight after the main meetups

contact elo

Sydney's Lesswrong wiki page

Facebook group: https://www.facebook.com/groups/lesswrongsydney/

New Zealand

Christchurch

Schedule: Every second Sunday

Venue: Usually a discussion room in James Hight library (University of Canterbury)

Middle East

Tel Aviv, Israel

Schedule: Once every two weeks

Venue: Usually Google Israel offices (29th floor, Electra tower, Yigal Allon 98, Tel Aviv)

Mailing list,Facebook group

Last updated: 21 April 2017

South America

Buenos Aires, Argentina

Inactive since 2014

Venue: Starbucks or GarageLab

Mailing list: Google Group

Website: [17]

São Paulo, Brazil

Last updated: 24 July 2017

Asia

Singapore

Inactive since 2016

Mailing list: LessWrong Singapore

Last updated: 25 July 2017

Tokyo, Japan

Inactive

Facebook group: https://www.facebook.com/groups/LessWrongTokyo/

Last updated: 25 July 2017

Bengaluru, India

Facebook group

Schedule : 2nd Saturday of every month, subject to availability of members as on that day.

We have been meeting for more than 1.5 years now. Sound us out if anyone is interested.

Last updated: 14 May 2016

Virtual

Australia mega-meetups

see Less_Wrong_meetup_groups#Australia

Including:

Blog posts