Eleven animal rights activists have been charged with trespassing and drug offences after a protest at a south-east Queensland abattoir last week.

Two other activists have already been charged with trespassing after a separate protest at a feedlot in March and were due back in court next month.

The activists at Carey Bros. Abattoir in Yangan, southern Queensland. Credit:Facebook

The most recent charges relate to the activist action at Carey Bros. Abattoir in Yangan, 100 kilometres south-east of Toowoomba on April 8.

About 100 people remained outside the factory itself but 18 went inside the abattoir and chained themselves to equipment.