Thomas may refer to any of the following:
- The Apostle Thomas
- Thomas I, Patriarch of Constantinople (March 21 and February 18)
- Thomas the Martyr (April 10)
- Thomas the Fool-for-Christ (April 24)
- Thomas the Fool-for-Christ (July 3) –Russian
- Thomas of Maleo (July 7), Gr. εν Μαλεώ
- Thomas Virgin-Martyr and Abbot (September 22 and October 10)
- Apostle Thomas (October 6 and translation of relics June 20)
- Also celebrated the first Sunday during Pentecost.
- Thomas the Child-martyr (November 1)
- Thomas II, Patriarch of Constantinople (November 14)
- Thomas the deacon Martyr (November 28)
- Thomas the “defourkinos” (December 10), Gr. ο Δεφουρκινός