Shaab Abu Nuhas, or Shab Abu Nuças (), is a triangular-shaped coral reef northwest of Shadwan Island in the northern Red Sea off Hurghada.
The reef is a navigation hazard because it projects into the shipping channel, as evidenced by (at least) seven shipwrecks. This includes the SS Carnatic (1896), Kimon M (1978), Olden (1987), Chrisoula K (1981) and Giannis D (1983). The reef and the wrecks are popular for scuba diving; four of the wrecks are at a depth of more than . The name of the reef is Arabic for "reef of father of copper", after the cargo of one of the wrecks.