Asca is a genus of mites.
Asca or ASCA may also refer to: Organisations ASCA (news agency), Italy (founded 1969) Accumulating savings & credit association, a form of microfinance American Swimming Coaches Association (founded 1958) Association for Student Conduct Administration, United States (founded 1987)
People Asca (singer) or Asuka Ōkura (born 1996), Japanese musician
Science Advanced Satellite for Cosmology and Astrophysics, launched from Japan in 1993 ANOVA-simultaneous component analysis, in bioinformatics Anti-saccharomyces cerevisiae antibody, in immunology