| Birth Name: | Thomas Stevens Van Alyea |
| Birth Date: | 21 September 1890 |
| Birth Place: | Princeville, Illinois, US |
| Death Date: | 1970 |
| Death Place: | Milwaukee, Wisconsin, US |
| Spouse: | Margaret (née) Fitch |
| Children: | Daughter |
| Parents: | Thomas Van Alyea and Ellen (née) Stevens Moody |
| Significant Buildings: | J. Leslie Sensenbrenner House |
| Significant Design: | Knowllward |
Thomas Stevens Van Alyea (September 21, 1890 - 1970) was a prominent architect, who designed homes and buildings in Wisconsin. He designed many of the buildings at St. John's Northwestern Military Academy in Delafield, Wisconsin.
He was born September 21, 1890, in Princeville, Illinois, and his parents were Thomas Van Alyea and Ellen (née) Stevens Moody. He married Margaret (née) Fitch on June 24, 1925, and they had a daughter August 28, 1926.
During World War I he entered military service as a 1st Sergeant on June 4, 1917. He was sent to Brest, France, and Romaine (Saône) and fought in the battles of St. Mihiel, and Meuse-Argonne, Argonne Forest. In 1918 he was cited for gallantry in action and he was awarded the Silver Star.
Thomas Van Alyea designed homes in the North Shore and upper east side areas of Milwaukee, Wisconsin. He designed buildings on the St. John's Military Academy grounds including Dekoven Hall. His architecture firm was called Courtney and White.
From 1939 to 1941 he renovated the J. Leslie Sensenbrenner House also known as the George Gaylord House. The home is located in Neenah, Winnebago County, Wisconsin, and it was added to the National Register of Historic Places in 2003.