Fyodor Petrovich Simashev (Russian: ????? ???????? ???????, 13 March 1945 – 19 December 1997) was a Russian cross-country skier who competed at the 1968 and 1972 Winter Olympics.
In 1968 he only entered the 15 km race and placed 26th.
In 1972 he won a gold medal in the 4×10 km and a silver in the 15 km, placing sixth-eighth in the 30 km and 50 km events.
He won another relay gold medal and two individual medals at the 1970 World Championships.
Domestically he won twelve Soviet titles: in the 15 km (1968), 30 km (1969, 1971, 1973), 50 km (1974) and 4×10 km relay (1968–70, 1972, 1973, 1975, 1976).
In 1972 he was awarded Order of the Badge of Honor.After retiring from competitions Simashov worked as a sports official in Zainsk until his death in 1997.
Since 1971, an annual junior cross-country skiing competition in his honor has been held in Zainsk.