Diapason

Template:Sister project Diapason may refer to:

• Diapason (interval), the name of the just octave in Pythagorean tuning
• Diapason (pipe organ), a tonal grouping of the flue pipes of a pipe organ
• Diapason (magazine), a French classical music magazine
• The Diapason (magazine), an American magazine for organ builders and players
• Diapason normal, the official French standard of concert pitch
• Diapason, a 1978 novel by Thomas Sullivan

See also

• Tuning fork (diapason in Italian and French)