Off the top of my head, and in no particular order:
- Salem’s Lot, by Stephen King
- Anno Dracula, by Kim Newman
- The Blood Opera trilogy (Dark Dance, Personal Darkness, Darkness I), by Tanith Lee
- The Blood Wine sequence (A Taste of Blood Wine, A Dance in Blood Velvet, The Dark Blood of Poppies, The Dark Arts of Blood), by Freda Warrington
- The Delicate Dependency, by Michael Talbot (the recently-published edition from Valancourt Books has a foreword by me!)
- Fevre Dream, by George R. R. Martin
- Lost Souls, by Poppy Z. Brite
- Midnight Blue: the Sonja Blue Collection, by Nancy Collins
- Still Life, by Michael Montoure
And, if you want super-sweet gothy YA vampires, the Vampire Kisses series by Ellen Schreiber are adorable.