Solly Tshepiso Msimanga (born 16 July 1980) is a South African politician serving as the Leader of the Opposition in the Gauteng Provincial Legislature since May 2019.

Msimanga was the Executive Mayor of the City of Tshwane Metropolitan Municipality from 2016 to 2019 and the DA Provincial Chairperson from 2014 to 2017.

In May 2011, he was elected to the Tshwane City Council, and in the same year, he became the leader of the DA's Gauteng North region.

He was appointed the party's provincial spokesperson for sports and served on the Education and Economic Development Portfolio Committees in the legislature.

[15][16] In September 2015, Msimanga was announced as the DA's mayoral candidate for the City of Tshwane in the 2016 municipal elections.

By forming a coalition with several smaller parties, and with the support of the Economic Freedom Fighters, Msimanga was elected unopposed as the Executive Mayor of Tshwane.

[18][19] When he was elected Mayor, he stated his intention to outlaw blue-lights brigades in the City — for everyone except the President.

[24][25] In August 2018, both the Economic Freedom Fighters (EFF) and African National Congress (ANC) had tabled motions of no confidence to remove Msimanga as Mayor.

[30] Msimanga's last months as Mayor were overshadowed by the irregular awarding of a multi-billion-rand tender contract to GladAfrica by embattled City Manager Moeketsi Mosola.

[37] On 18 January 2019, Msimanga announced that he was stepping down as Mayor of Tshwane to focus on his Gauteng premiership campaign.

[41] On 19 August 2018, Msimanga was announced as the party's Gauteng Premier candidate for the 2019 general elections.

[43] On 8 May 2019, the African National Congress narrowly retained their majority in the Gauteng Provincial Legislature with a total of 50.19% of the vote.

[49] On 13 September 2023, DA leader John Steenhuisen announced Msimanga as the party's Gauteng premier candidate for the 2024 provincial election.

[51] In October 2020, DA MPL Nkele Molapo filed a sexual harassment case against Msimanga.