Elmofongo: Nope. 3, Portable Ops, Peace Walker, Ground Zeros, 5, NES Metal Gear, Metal Gear 2 Solid Snake, 1/Twin Snakes, 2, 4, and Revengence.
"NES Metal Gear" is a shoddy port that doesn't even tell the same story as the original Metal Gear on the MSX.
The other games created without Kojimas involvement at least fit into the canon (even if Kojima doesn't acknowledge them as such). This one just doesn't. There isn't even a Metal Gear in it. :P
Edit: Okay, I confused a few things - Snake's Revenge on NES was the one that does not at all fit in. Metal Gear on NES wasn't changed as much as I thought. But it's still not the real thing and there's still no fight against Metal Gear (while it's clearly canon that Solid Snake destroyed Metal Gear directly and not some super computer :P).