Michael William Byrne (born February 6, 1990) is an American drummer who was a member of the rock band The Smashing Pumpkins.

When Pumpkins frontman Billy Corgan called for rehearsals to replace Jimmy Chamberlin, Byrne auditioned and was chosen out of thousands of applicants.

He played drums in Sky Saxon tribute band Spirits in the Sky for six shows in August 2009, along with Corgan, Kerry Brown, Kevin Dippold, Mark Tulin, Linda Strawberry, Ysanne Spevack, Mark Weitz, and Dave Navarro, and also performs drums on the Pumpkins project, Teargarden by Kaleidyscope.

Byrne's YouTube channel, which he created three years prior to joining the band, had been "MarquisinSpadez", a reference to the song "Marquis in Spades", from the Smashing Pumpkins' Zero EP.

[8] Upon leaving the Smashing Pumpkins, Byrne continued his efforts with his local band Bearcubbin!, in the Pacific Northwest.