Diagon may refer to: * , a river in Elis, Peloponnese, Greece *

Diagon Alley Diagon Alley is a fictional shopping district in J. K. Rowling's ''Harry Potter'' franchise. The location first appeared in the 1997 novel ''Harry Potter and the Philosopher's Stone''. It is featured in multiple video games, as well a 2001 board ga ...

, a place in ''Harry Potter'' * Root-2 rectangle, a

dynamic rectangle A dynamic rectangle is a right-angled, four-sided figure (a rectangle) with dynamic symmetry which, in this case, means that aspect ratio (width divided by height) is a distinguished value in dynamic symmetry, a proportioning system and natural desi ...

produced by projecting the diagonal of a square

See also