Steffen Grummt (born 15 September 1959 in Wilkau-Haßlau, Saxony) is an East German decathlete who competed from the late 1970s to 1983.

Following East Germany's boycott of the 1984 Summer Olympics in Los Angeles, Grummt switched to bobsleigh where he found better success.

He is married to Kornelia Ender who won a combined nine medals in women's swimming at the Summer Olympics in both 1972 and 1976.

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