D+ is an indie rock band based in Anacortes, Washington. Formed in 1996 by singer/guitarist Bret Lunsford and singers/multi-instrumentalists Karl Blau and Phil Elverum, the band is perhaps best known for Lunsford's droll vocals and witty wordplay, and a minimalist, charmingly ramshackle sound.

The NATO D band is the obsolete designation given to the radio frequencies from 1 000 to 2 000 MHz (equivalent to wavelengths between 30 and 15 cm) during the cold war period. Since 1992 frequency allocations, allotment and assignments are in line to NATO Joint Civil/Military Frequency Agreement (NJFA). However, in order to identify military radio spectrum requirements, e.g. for crises management planning, training, Electronic warfare activities, or in military operations, this system is still in use.

D is a Japanese visual kei rock band formed in 2003 by Asagi, Ruiza and Sin, after their previous band Syndrome disbanded.