When going over my bookshelves, I noted that I have a rather eclectic, although small, collection of Wiccan/Witch/Pagan books. Most books are by either Scott Cunningham or Silver RavenWolf, although only the Scott Cunningham books have ever gotten me to read all the way through them. One of my Silver RavenWolf books is highlighted over the first 3-4 chapters, I need to start working with that book again. 
I’m still working on finishing the book from the first Weiser Book Club, and frankly, as I never did see any tweets from that again, and I don’t see @WeiserBooks tweeting anymore (I know someone else had taken over the Twitter account) so I’m wondering if the book club was disbanded. 
In any case, in looking over my bookshelves it would appear that my favorite Pagan/Wiccan authors are Silver RavenWolf and Scott Cunningham. However, I also have book by Raymond Buckland and other authors. I am not in front of my bookshelves so I can’t tell you right now all the authors that appear there.
Plus there are authors like Maggie Shayne who are fiction writers, who happen to be Wiccan. I’ve loved Maggie’s books since before I ever found out she was a Wiccan. Nora Roberts may or may not be Wiccan/Pagan, but I’ll say this, she writes a really good magickal story if she isn’t. 
I’m sure there are more authors who are Wiccan/Pagan out there, some of them perhaps do not share this fact with their readers, but I’m sure they are there.
So who are some of your favorite Wiccan/Pagan authors? These can be informative/non-fiction writers or fiction writers.
I love Starhawk, both her novels and her non-fiction. As to the rest of my bookshelves (and piles) I have a wide range of authors who I like to varying degrees.
I used to really enjoy Kisma Stepanich but most of her books were out of print last time I checked.
PS
Laurell K Hamilton is another fiction writer who is Pagan.
I thought Laurell K Hamilton was Pagan but I wasn’t positive, so I didn’t mention her. LOL