Thomas Grønnemark (born 12 December 1975) is a former Danish athlete and currently works as a throw-in coach for a number of professional football teams.He holds the Guinness World Record for the longest throw-in, and was a member of the Danish bobsled team for 4 years.He has worked as a coach with teams, including Viborg, FC Midtjylland and Silkeborg and, as of September 2018, also works as a throw-in coach for Liverpool F.C.