Red Letter Day has been the name of at least eight different bands:

1. A punk band from the Portsmouth region of the UK;

2. a folk/blues band from the Eastern US that consisted of Suzanna Mallow and Andrea Jones (and does not appear to be recording any longer);

3. a hard rock band from the Virginia region of the US that mostly performs live.

4. A pop band from Hamburg, Germany, 1989-1994.

5. A punk rock band from South Florida comprised of ex-members of As Friends Rust, before they became The Rocking Horse Winner.