The Drama Desk Award for Outstanding Costume Design of a Play is an annual award presented by Drama Desk in recognition of achievements in theatre across collective Broadway, off-Broadway and off-off-Broadway productions in New York City.
The award was established in 1969, with the Drama Desk Award for Outstanding Costume Design being presented each year to any play or musical production. Starting in 2016, the singular award was replaced by separate play and musical categories.
Dede M. Ayite has received the most nominations in the category, with four, followed closely by Toni-Leslie James with three and Ann Roth, Emilio Sosa, Qween Jean and Enver Chakartash with two each. No designer has won the award multiple times.