Kanye West is in Dayton, Ohio ... and all signs are pointing to him hosting his Sunday Service in the same city where 9 people were killed in a recent mass shooting.

Kanye and his family were spotted Friday afternoon in Dayton ... which is pretty interesting, considering that's where his longtime friend Dave Chappelle is hosting a free show Sunday to honor the lives that were lost in this month's tragedy.

Our sources tell us Kanye appeared to be scouting a location for a Special Sunday Service ... and there are rumblings he will be bringing in his choir as well.

We reached out to Kanye's camp for confirmation ... but we haven't heard back.

As you know ... Kanye's Sunday Service has become super popular this year, with tons of celebs attending. He had a huge service at Coachella and has held the rest mostly around Los Angeles.