on Publishing … and Other Forms of Insanity:
Here are sixteen publishers accepting dark fiction, horror, urban fantasy, military horror, and anything that goes bump in the night – including vampires. None require an agent, and all are traditional publishers.
Some of these publishers have been in business for a long time and have a great track record. Others are start-ups.
Read their websites, look at the covers of the books they publish (do you like the art?), check out their authors on Amazon – in short, investigate before you submit your work.
And be sure to read submission requirements carefully and follow them to the letter.