Capsule (カプセル, Kapuseru, stylized in all caps since autumn 2013[1] and previously in all lowercase) is a Japanese electronica band consisting of producer Yasutaka Nakata and vocalist Toshiko Koshijima.

Capsule formed in November 1997, after Yasutaka Nakata and Toshiko Koshijima met at the Teens' Music Festival in the Hokuriku area convention when they were both 17 years old.

Lounge Designers Killer (2005) was frequently referred to as "neo-Shibuya-kei" due to their stylistic similarities, both aesthetically and musically, to acts from the Shibuya-kei movement of the 1990s, most notably Pizzicato Five.

Yugo Nakamura's studio, Tha of Japan, used Capsule's music for promotional TV and web advertisements for KDDI.

Their song Portable Airport (remix) is featured in promos for The Comedy Channel on Australian pay TV.