Size Matters is an album by the band Helmet.
Size Matters may also refer to: Cultural and sexual perceptions of the size of the human penis "Size Matters (Someday)", a hit country song recorded by Joe Nichols "Size Matters" (Charmed), a 2001 American television episode "Size Matters" (Coupling), a 2000 British television episode Size Matters, the second issue of the comic book M. Rex "Size Matters", a 2004 song by Natasha Bedingfield from Unwritten Ratchet & Clank: Size Matters, a video game for PSP and PS2