Lois Winkelmann Kolkhorst (born November 4, 1964)[1] is an American businesswoman and politician serving as a Republican member of the Texas State Senate.

[1][3] Before joining the Texas Senate, she served as president and CEO of the Washington County Chamber of Commerce.

in support of legislation that prohibited businesses and government entities from requiring proof of vaccination for products or services.

[6] In February 2023, Kolkhorst introduced a bill that could potentially ban Chinese, Iranian, North Korean and Russian immigrants from purchasing homes in Texas.

[1] Though they reside in Brenham, the couple owns and operates Kolkhorst Petroleum in Navasota in Grimes County.