USS Carlson (BDE-9/DE-9) was an short-hull destroyer escort in the United States Navy. It was named after Chief Machinist's Mate Daniel William Carlson (1899–1942), who was killed during the Battle of Midway aboard the destroyer .
The Prova Ciclística 9de Julho (Portuguese for July 9 Cycling Race) is a single day road bicycle racing event held in Brazil. It was created in 1933 by journalist Cásper Líbero.
The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.