Daniel Webster Warner (October 1, 1857 – May 14, 1933) was a farmer, rancher and Canadian federal politician.

He was active in the early farm organizations of the Edmonton area and then held important posts in the United Farmers of Alberta after its founding in 1909.

[1] Warner first ran for a seat in the House of Commons of Canada in the 1917 Canadian federal election in the Battle River district.

Warner ran again in the 1921 Canadian federal election, this time as a United Farmers (Progressive Party of Canada) candidate.

[2] With a landslide, Warner defeated Sheppard and the incumbent Conservative MP, James McCrie Douglas (soon to be mayor of Edmonton).