Sergei Mikhailovich Grinkov (February 4, 1967 – November 20, 1995) was a Russian pair skater. Together with partner Ekaterina Gordeeva, he was the 1988 and 1994 Olympic Champion and four-time World Champion.

Sergei Grinkov was born in Moscow to Mikhail Kondrateyevich Grinkov and Anna Filipovna Grinkova. The younger of two children, he had an older sister named Natalia Mikhailovna Grinkova.

He first took the ice at the age of five, entering Children and Youth Sports School of CSKA in Moscow. As Grinkov was not a strong solo skater, his coach decided to try him in pair skating, and in August 1981, at age fifteen, he was paired with eleven-year-old Ekaterina Gordeeva at the Central Red Army Club (CSKA) in Moscow by coach Vladimir Zaharov.

The pair won the 1985 World Junior Championship in Colorado Springs, Colorado. The following year they won the first of their four World Figure Skating Championships. They became repeat world champions the following year and won gold at the 1988 Winter Olympics in Calgary, Alberta.

Ekaterina "Katia" Alexandrovna Gordeeva (Russian: Екатерина Александровна Гордеева) (born May 28, 1971) is a Russian (former Soviet) figure skater. Together with her late partner and husband Sergei Grinkov, she was the 1988 and 1994 Olympic Champion and four-time World Champion in pair skating. After her husband's death, she continued performing as a singles skater.

Often called "Katia", Gordeeva was born in Moscow, Soviet Union (now Russia) to Alexander Alexeyevich Gordeev and Elena Levovna Gordeeva. She has a younger sister, Maria Alexandrovna Gordeeva (born 1975), who lives in Moscow. Gordeeva began skating at the age of four, in skates many sizes too big, wearing multiple pairs of socks because skates small enough for her feet were unavailable in the Soviet Union.

Gordeeva began figure skating at age four, when she entered Children and Youth Sports School of CSKA Moscow. She was not a particularly strong jumper, and in August 1981, coach Vladimir Zaharov paired the 10-year-old Gordeeva with the 14-year-old Sergei Grinkov. At one point, however, a coach insisted that Gordeeva pair with someone else, because Sergei frequently missed practice. She refused. Instead, the pair changed coaches.