Thomas' Bar on Museum St runs a weekly gay night on a Thursday from 7.30pm-closing. There's usually music and a live DJ.
The Little John on Castlegate is run by a very friendly gay male couple. They offer reasonably-priced drinks, special offers on a regular basis, weekly pub quiz, and delicious meals (including Sunday roasts) http://www.littlejohnyork.co.uk/home/
The lesbian reading group meets every third Monday from 6.30pm-7.30pm in York Central Library in the centre of town. For further information phone the library directly: 01904 552814.
If you live locally and would like to meet other lesbians, or talk to someone in confidence about your sexuality, call York Lesbian Line: Fridays 7.30-9pm 01904 646812.