[ScarletEmerald]

Nope. Foundation was first published in 1942, and is something of an alternate take on the Space Opera w Evil Empire genre, which came earlier, with the first prominent example being E.E. "Doc" Smith's Galactic Patrol in 1934. Smith previously wrote the Skylark series of space opera stories, first published in 1928.

And while not identical, Smith's Lensmen and Lucas' Jedi Knights have a great deal in common.