A perfect square is an element of algebraic structure that is equal to the square of another element.
- Square number, a perfect square integer.
Entertainment
- Perfect Square, a live recording by the band R.E.M.
- Perfect Square (publisher), a children's imprint label by Viz Media.
See also
- Perfect square dissection, a dissection of a geometric square into smaller squares, all of different sizes
- Perfect square trinomials, a method of factoring polynomials