The Atalskes Phaser Corporation was a company incorporated to do business in the Federation around the time of the 23rd century.
In the 2270s, circa reference stardate 2/12, Atalskes was a relative newcomer to the field of weapon technology, but took on a high profile role as the supplier of Starfleet's Atalskes phaser IV units, and their mated phaser III components. (ST reference: Mr. Scott's Guide to the Enterprise)