Richard Gailey, Sr. (22 April 1834 – 24 April 1924) was an Irish-born Australian architect. Gailey was born in Donegal, Ireland and emigrated to Australia in 1864, becoming an influential and prolific architect in colonial-era Brisbane. He died in Brisbane on 24 April 1924, two days after his ninetieth birthday, and is buried in along with his wife Mary, née Rice.