Roman Paul Alois Koch (born 4 February 1958) is a German sailor.

As helmsman, he became twice World Champion in the Soling together with his teammates Maxl Koch and Gregor Bornemann.

[22][1][2] The second time took place five years later 5–13 February on the Guaiba river off the coast of Porto Alegre, Brazil.

[22][3][4] After the Championship in Castellione the Koch team earned the nickname "The Maremma boys".

Furthermore, Koch won two gold and five silver medals at Soling European Championships between 2003 and 2013 all as helmsman and with the same team members.