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| English | Russian |
| the third week in Lent | безымянная неделя |
| Third Crusade | Третий крестовый поход (1189-1192, led by Richard I the Lion-Heart and Philip II Augustus of France, it had failed of its major objective, the capture of Jerusalem, and Richard's capture of Cyprus was the most lasting achievement) |
| Third Epistle of John | Третье соборное послание св. апостола Иоанна Богослова (The third of the three New Testament writings, all composed sometime around AD 100 and traditionally attributed to John the Evangelist, son of Zebedee and disciple of Jesus) |
| Third Epistle of John | Третье послание Иоанна |
| Third Force A paramilitary group of Protestant fighters organized in Northern Ireland by Ian Paisley | Третья сила |
| Third Order Carmelites | кармелиты Третьего ордена (An order devoted to teaching, care of the sick, and other charitable works) |