Gianni De Magistris (born 3 December 1950 in Florence, Italy) is a retired Italian water polo player.

He was part of the Italian squad that won silver at the 1976 Montreal Olympics

Water polo at the 1976 Summer Olympics

The water polo tournament at the 1976 Summer Olympics was held from July 18 to July 27, 1976 in Montreal, Canada.-Medalists:-Participating teams:Group AGroup BGroup C-Group A:*July 18, 1976*July 19, 1976*July 20, 1976-Group B:...

.

Mavrotas played in five consecutive Summer Olympics for Italy from 1968

Water polo at the 1968 Summer Olympics

The Water Polo Tournament at the 1968 Summer Olympics was held from October 14 to October 25, 1968 in Mexico City, Mexico. Australia earned one of sixteen invitations, but the Australian Olympic Committee refused to pay the squad's transportation cost...

  to 1984

Water polo at the 1984 Summer Olympics

Water polo at the 1984 Summer Olympics as usual was part of the swimming sport, the other two being swimming and diving. They were not seen as three separate sports, because they all were governed by one federation — FINA. Water polo discipline consisted of one event: the men's team...

. He is the fourth water polo player to compete at five Olympics, after Briton Paul Radmilovic, Brazilian João Gonçalves Filho

João Gonçalves Filho

João Gonçalves Filho was a Brazilian sportsman who competed in five Olympics. Born in São Paulo, he represented Brazil in swimming at the 1952 and 1956 Olympics and in water polo at the 1960, 1964, and 1968 Olympics....

, and Hungarian Dezső Gyarmati

Dezso Gyarmati

Dezső Gyarmati is a former Hungarian water polo player and three times Olympic champion, and also a former coach of the Hungarian national water polo team.-Player career:...

. He is among the first ten Italians to compete at five Olympics.