| Thomas Langton Church | |
| Constituency Mp: | Toronto North |
| Parliament: | Canadian |
| Predecessor: | George Eulas Foster |
| Successor: | Electoral district abolished |
| Term Start: | 1921 |
| Term End: | 1925 |
| Constituency Mp2: | Toronto Northwest |
| Parliament2: | Canadian |
| Predecessor2: | Electoral district created |
| Successor2: | John Ritchie MacNicol |
| Term Start2: | 1925 |
| Term End2: | 1930 |
| Constituency Mp3: | Toronto East |
| Parliament3: | Canadian |
| Predecessor3: | Edmond Baird Ryckman |
| Successor3: | Electoral district abolished |
| Term Start3: | 1934 |
| Term End3: | 1935 |
| Constituency Mp4: | Broadview |
| Parliament4: | Canadian |
| Predecessor4: | Electoral district created |
| Successor4: | George Harris Hees |
| Term Start4: | 1935 |
| Term End4: | 1950 |
| Order5: | 37th |
| Office5: | Mayor of Toronto |
| Predecessor5: | Horatio Clarence Hocken |
| Successor5: | Charles A. Maguire |
| Term Start5: | 1915 |
| Term End5: | 1921 |
| Birth Date: | 1873 |
| Birth Place: | Toronto, Ontario |
| Death Date: | February 7, 1950 (aged 79–80) |
| Party: | Conservative |
Thomas Langton Church (1873 – February 7, 1950) was a Canadian politician.After serving as Mayor of Toronto from 1915 to 1921, he was elected to the House of Commons of Canada in the 1921 election as a Conservative from the riding of Toronto North. He was defeated in the 1930 election in Toronto West Centre, but returned to Parliament as Member of Parliament (MP) for Toronto East in a 1934 by-election. He remained in the House of Commons until his death in 1950.
As mayor, Church was strongly backed by the Toronto Telegram and opposed by the Toronto Daily Star. He was occasionally mocked in the pages of the Star by Ernest Hemingway who was, at the time, a reporter for the paper. Late in his career as an MP, Church denounced the newly formed United Nations as "modern tower of Babel", for "which Canada and Great Britain should not allow their interests to be the play thing."
In the House of Commons in June 1936, he protested against the requirement of bilingual banknotes in the Bank of Canada Act for banknotes to be introduced as the 1937 Series, stating there was no authority for it in the British North America Act, and that it had not been an issue during the 1935 federal election. He favoured printing dual-language banknotes (distinct English and French banknotes) as had been done for the 1935 Series. He was also a member of the Orange Order in Canada.