Tertuis Alfred Simmers (born 23 March 1983) is a South African politician who has been serving as the Western Cape Provincial Minister of Infrastructure since April 2022.

[3] Following the Democratic Alliance's victory in the Western Cape in May 2019, Simmers was appointed as the Provincial Minister of Human Settlements by the newly elected premier, Alan Winde.

[12] On 21 August 2021, Simmers was elected as the interim deputy provincial leader of the Democratic Alliance in the Western Cape, defeating his only opponent for the position, Breede Valley Mayor Antoinette Steyn.

[13][14] In January 2022, interim DA provincial leader Albert Fritz stepped aside from the position amid a sexual misconduct scandal.

[15] Fritz officially resigned from the position and the DA on 1 March 2022 after an independent report found sufficient evidence of sexual misconduct.

[20] GOOD Party MPL Brett Herron raised allegations the Simmers stole electricity while a DA Councilor in George Municipality.

Brett Herron questioned Premier Alan Winde about the appointment of Simmers to his Cabinet, raising the issue of the electricity theft allegations once again.