Rigor mortis is one of the recognizable signs of death.

Rigor mortis also may refer to:

• Rigor Mortis (film), 2013, by Juno Mak
• Rigor Mortis (radio), 2003-2006 BBC Radio 4 comedy series
• Musical contexts:
  • Rigor Mortis (band), thrash-metal band
  • Titled works:
    • "Rigor Mortis" (song), 1977, by Cameo
    • Albums:
      • Rigor Mortis (album), 1988 by the band
      • De RigueurMortis 2001 album by Australian band TISM