People
* Abram D. Ditmars, two-time mayor of Long Island City in Queens, New York, US * Ivan Ditmars, music writer for ''Places
* Ditmars, Queens, a neighborhood in the Astoria neighborhood of Queens, New York, US * Ditmars Boulevard–Astoria (BMT Astoria Line), a rapid transit station in New York City * Ditmars Boulevard (formerly Ditmars Avenue), a street in New York CitySee also
* Dietmar, a given name * Ditmar (disambiguation) * Dittmar, a surname {{disambiguation, surname, geo Surnames from given names