Fire Mountain Gems is hosting their 2009 Beading Contest. There are all kinds of categories, but of course I'll focus on the glass one, which includes lampwork. Here's what it says:
Glass: Calling all glass! Create masterful art and jewelry pieces with Czech fire-polished, Czech pressed glass, opalite, goldstone, rainbow "stone," bumpy beads, lampworked glass, liquid glass, dichroic glass and glass components ... the Fire Mountain Gems and Beads Jewelry Maker's Comprehensive Catalog's the limit! Due by April 15th. Be sure to read all the rules, because there are some. A certain percentage of your jewelry needs to be made from Fire Mountain products, etc.
Due by April 1st, is the Annealer Magazine's "In Time for the Holidays" contest. There are two glass related categories including beads and off mandrel pieces. You'll need to read the extensive, but very easy to understand rules for it. Come on, why not! (and here's the Annealer's facebook link too.
If you know of other contests or call for artists, please post them in the comments section. I know there are a lot more out there. Thanks!