Wallace Warren Cross (September 23, 1887 – August 4, 1973) was a medical doctor and long-serving politician from Alberta, Canada.

He served six terms in office, retiring from provincial politics in 1959.

Cross became minister of health under Premier William Aberhart and strongly enhanced the powers of the Alberta Eugenics Board by removing the requirement to obtain consent from individuals to be sterilized.

[1] During his time as minister, Cross also opened a series of cancer clinics across Alberta, and actively focused the Department of Health's resources on cancer treatment.

[2] The Cross Cancer Institute, which opened in 1968, is named in his honour.