Bilateral may refer to any concept including two sides, in particular:
Bilateria, bilateral animals Bilateralism, the political and cultural relations between two states Bilateral, occurring on both sides of an organism (Anatomical terms of location § Medial and lateral) Bilateral symmetry, symmetry between two sides of an organism Bilateral filter, an image processing algorithm Bilateral amplifier, a type of amplifier Bilateral (album), an album by the band Leprous Bilateral school, see Partially selective school (England)