Thomas Giessing (born 19 March 1961 in Rhede, North Rhine-Westphalia) is a retired West German sprinter who specialized in the 400 metres.
At the 1982 European Championships he finished eighth in the 400 metres and helped win the 4 x 400 metres relay with teammates Erwin Skamrahl, Harald Schmid and Hartmut Weber. At the 1984 Summer Olympics he ran in the first round for the relay team.[1]