LOL! TOO SHORT IS NOT DEAD DAMMIT!

Despite what you may be hearing on Twitter ... rapper Too Short insists ... he's NOT DEAD.

The Internet has been on fire with false reports that the rapper died from a heart attack today -- and several pranksters have already attempted to change the guy's Wiki page to reflect his death.

But T.S. just tweeted, writing, "Stop calling my phone. I'm not dead. Been in the lab working on my 19th album."

And just to make sure, we spoke to the guy on the phone -- and we're pretty sure that settles it ... the guy's alive.

SOURCE