Krul is a surname. Notable people with the surname include:
Huiberdina Krul (1922-1994), Dutch Olympic artistic gymnast J. T. Krul (born 1972), American comic book writer, best known for his work on Aspen MLT's Fathom comic series Jan Harmenszoon Krul (1601–1646), Dutch Catholic playwright Tim Krul, (born 1988), Dutch footballer André Krul, (born 1987), Dutch footballer
Other uses Flourish of approval, a symbol used for correcting work. Also known as the krul.
See also Krol Krull