Thomas Henry Blow (January 22, 1862 – December 27, 1932) was a provincial level politician from Alberta, Canada.
Blow first ran for the Alberta Legislature as part of a 2-man Conservative slate in the Calgary provincial electoral district in the 1909 Alberta general election. He finished 4th out of 5th place in the block vote. The winners was the other Conservative candidate in the slate Richard Bennett and Liberal incumbent William Henry Cushing.
The province's electoral districts would see significant redistribution in the 1913 Alberta general election and Calgary would be divided up into 3 constituencies. Blow ran as the Conservative candidate in the new South Calgary riding. He won the new district in a landslide over Liberal candidate Clifford Jones. Blow served in the official opposition.
Blow stood for re-election in the 1917 Alberta general election this time defeating Labor candidate and future federal Member of Parliament William Irvine and alderman John McNeill to earn a second term in office.
Calgary would grow to 5 seats in the 1921 Alberta general election and be changed back to a block vote, Blow would run for re-election amongst 20 other candidates. He would finish 12th out of 21 and go down to defeat. He died in Vancouver, British Columbia in 1932.