The mask of Tutankhamun is a gold mask of the 18th-dynasty ancient Egyptian Pharaoh Tutankhamun (reigned 1332–1323 BC). It was discovered by Howard Carter in 1925 in tomb KV62 in the Valley of the Kings, and is now housed in the Egyptian Museum in Cairo. 

The mask is one of the best-known works of art in the world, as well as one of the trademark symbols of ancient Egypt.

Bearing the likeness of Osiris, Egyptian god of the afterlife, it is 54 centimetres (1.8 ft) tall, weighs over 10 kilograms (22 lb) or 321.5 Troy Ounces, and is decorated with semi-precious stones. An ancient spell from the Book of the Dead is inscribed in hieroglyphs on the mask's shoulders. The mask had to be restored in 2015 after its 2.5-kilogram (5.5 lb) plaited beard fell off and was hastily glued back on by museum workers. According to Egyptologist Nicholas Reeves, the mask is "not only the quintessential image from Tutankhamun's tomb, it is perhaps the best-known object from ancient Egypt itself."

Since 2001, research has suggested that it may originally have been intended for Queen Neferneferuaten; her royal name (Ankhkheperure) was found in a partly erased cartouche on the inside of the mask.