David Bowie: Street Art Tributes Popping Up ... For Lemmy Too

David Bowie won't soon be forgotten anywhere, but especially not in L.A. where artists are throwing up HUGE tributes.

The most prominent one went up on the office of Timewarp Music -- Jules Muck painted a mural of Ziggy Stardust era Bowie chumming it up with another rock icon ... Motorhead frontman Lemmy, who died last month.

Another piece of graffiti appeared hours after Bowie's death Sunday night -- his name was spray painted on wall in the middle of Hollywood. That one didn't stick though ... it was painted over by Tuesday morning.