Theodore Hugh Rosslyn Koch (21 December 1886 - 24 April 1961) was a Ceylonese businessman,[1] company director and politician.

[2] Koch was born on 21 December 1886, the sixth child and fourth son of Cecil Theodore (1852-1890) and Evelyn Harriet (née Foenander) (1855-1919).

[3] Koch married Florence Lilian Kriekenbeek (born 1891) on 7 April 1915; they had four children.

[8] Koch served in three successive parliaments until he resigned in October 1959, wbeing succeeded by Dr. Eric Brohier.

[9][10] In the 1952 New Year Honours, Koch was made an Officer of the Order of the British Empire (Civil Division) for his services to the export trade.