An isosceles triangle is a triangle with two equal sides.

Isosceles may also refer to: Isosceles (band), an indie pop band from Scotland Isosceles set, a set of points all triples of which form isosceles triangles Isosceles shooting stance, a posture in which the arms and chest of the shooter describe an isosceles triangle Isosceles trapezoid, a trapezoid with two equal sides

See also Isosceles triangle theorem, the theorem that isosceles triangles have two equal angles Isosceles Peak, a mountain in Canada