There are at least three Susans: a Japanese-American pop singer, a proto punk band, and a character from the children's television program, Sesame Street.

1. Susan (born Susan Nozaki) was a pop singer who recorded in Japan in the early 1980s. She is half-American and half-Japanese. Her music is technopop in style, mainly featuring synthesisers and drum machines.

Her records were released by CBS in the UK, though no single ever reached the top 40. In Japan, Epic Sony released her music. She was known to collaborate with various members of Yellow Magic Orchestra and other Japanese producers of the time such as Kazuhiko Katoh, Hajime Tachibana and Keiichi Suzuki. Though all her releases refer to her as Susan (or Suzan if taken from the Japanese katakana), the CDDB refers to her as being "Susan. E" when the Complete Susan CD is played in Winamp or Realplayer. Aside from singing she has also done some work as a model for clothing company Miho Matsuda and cosmetics company Shiseido Co. Ltd.

Since 2005 Susan has been playing live dates in Tokyo featuring re-arranged versions of her releases and has been writing new material.

2. Susan, a proto punk band from Boston Massachusetts, best known for their appearance on LIVE AT THE RAT album. Their best song "Right Away" clocks in at 7 minutes and 7 seconds.

3. Susan is a character on Sesame Street played by Loretta Long.

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