A. crispa may refer to:
Aerides crispa, an orchid Alder crispa, a tree in the birch family Alnus crispa, an alder with a wide range across the cooler parts of the Northern Hemisphere Amphiura crispa, a brittle star Anchusa crispa, a critically endangered species Ardisia crispa, a coralberry Astilbe crispa, a perennial, herbaceous flowering plant
See also Crispa (disambiguation)