Throwin' a few random ones in the ring:
Elizabeth Bear - Her Range of Ghosts is set in a world inspired by Asian, particularly Mongolian, cultures, and there's a strong woman in a starring role.
Kristen Britain - The Green Rider series has a woman MC, and is set in a nicely-realized fantasy world.
Lindsay Buroker - I've enjoyed most everything of hers I've read. Worth a look. Tends to women MCs, who tend to be strong.
Elizabeth Haydon - The Symphony of Ages series creates an entire fantasy world, not just a continent-and-coastline land. (I got a little tired of some of the angsting by the leads, but it's still a very impressive work of worldbuilding.) The woman lead can be a bit of a dunderhead on some levels, though...
Robin Hobb - The Farseer universe encompasses numerous works, with some strong women.
Mercedes Lackey - One of the big names in fantasy for many years, still writing with a new YA series. Some strong women.
Naomi Novik - Uprooted stars a reasonably competent lady MC. (Novik's Temeraire series is excellent alt-history, though the women aren't leads.)
Catheryne M. Valente - Somewhat surreal at times, but interesting and original tales.
If you're willing to look at YA and MG titles, add Tamora Pierce, K. A. (Katherine) Applegate, Patricia C. Wrede, and Jane Yolen to the list. And Graceling, by Kristen Cashore.