Three baby koalas have been stolen from the house of an RSPCA wildlife carer in Brisbane's east.

Police said the three koala joeys were taken between 9:00pm on Thursday and 6:00am on Friday from an address in Ormiston.

The animals were among 10 joeys being treated by the carer and all three are about 14 months old.

The carer had been treating two of them with specialist medication and all three were on supplemental feeding plans.

Police said the joeys would not survive in the wild because they had been dependent on human care and so should not be released.

Anyone responsible for taking the koalas has been urged to call call the RSPCA or hand the animals in to police as soon as possible.