Hexosaminidase (, beta-acetylaminodeoxyhexosidase, N-acetyl-beta-D-hexosaminidase, N-acetyl-beta-hexosaminidase, N-acetyl hexosaminidase, beta-hexosaminidase, beta-acetylhexosaminidinase, beta-D-N-acetylhexosaminidase, beta-N-acetyl-D-hexosaminidase, beta-N-acetylglucosaminidase, hexosaminidase A, N-acetylhexosaminidase, beta-D-hexosaminidase) is an enzyme involved in the hydrolysis of terminal N-acetyl-D-hexosamine residues in N-acetyl-ß-D-hexosaminides.