Thomas Brittain Vacher (1805–1880) was a British lithographer, legal stationer, and printer.
He founded Vacher's Parliamentary Companion, a parliamentary reference work which continues to this day as Vachers Quarterly, published by Dods.[1]
Vacher was the son of the stationer Thomas Vacher of Parliament Street, Westminster, where he was born. He went into business with his brother George; the third son Charles Vacher was known as an artist. Thomas Brittain Vacher was himself an amateur artist. He married in 1850.[2]
Vacher was the author of Brief Prayers for Travellers (1868). His son, the architect Sydney Vacher, designed the elaborate pulpit in St Margaret's church, Westminster as a memorial to him.[3]