Rynn can be both a given name and a surname. Notable people with this name include:
Real people As a given name Rynn Berry (1945–2014), American author and scholar Rynn Lim, Malaysian singer
As a surname Chris James and Patrick Rynn, American blues duo Marilyn Rynn (died 1995), Irish civil servant and murder victim
Fictional characters Rynn (Drakan), the main character in the Drakan: Order of the Flame video game