Harry Taylor Willetts (1922 – 7 April 2005) was an English scholar of Russian. A professor of Russian history at Oxford University, he was director of the Russian and East European Centre at St Antony's College, Oxford, where his colleagues included the noted Russian scholars Max Hayward, Harry Shukman and William Deakin. A prolific translator of Russian literature, he is best known for his translations of the works of the Nobel Prize winner Alexander Solzhenitsyn. As a translator, he is often credited as H.T. Willetts.
In 1957 Willetts married his Polish Jewish wife Halina Szenbaum in London.