| Southdowns College | |
| Motto: | Enlightened Minds |
| Street: | John Vorster Drive, Doringkloof, 0157 |
| City: | Centurion (City of Tshwane Metropolitan Municipality) |
| Schooltype: | Private & Boarding |
| Sister School: | Pecanwood College Tyger Valley College |
| District: | District 9 |
| Number: | 012 665 0244 |
| Head Name: | Exam board |
| Head Name2: | Headmaster |
| Head2: | Mr Magalan Pather |
| Grades: | 00012 |
| Gender: | Boys & Girls |
| Colours: | Beige Maroon White |
| Schedule: | 08:00 - 14:00 |
| Language: | English |
| Lower Age: | 3 |
| Upper Age: | 18 |
| Students: | 1,300 pupils |
| Campus: | Urban Campus |
| Campus Type: | Suburban |
| Rival: | Cornwall Hill College Midstream College |
| Bar Pass Rate: | IEB 100% Pass Rate |
| Nickname: | SDC |
| Fees: | R135,000 (boarding) R100,000 (tuiton) |
Southdowns College is a private, English medium co-educational primary and high school situated in Irene, Centurion, Gauteng, South Africa. The school is part of the Independent Schools Association of Southern Africa and writes the Independent Examinations Board examinations.
Southdowns College is part of the ADvTECH Group, which also includes Tyger Valley College and Pecanwood College in Hartebeespoort.
Southdowns College was established in 2007 and had pre-primary and primary schools. In 2008 they introduced a junior high school and completed the new primary school and high school buildings and an arena where southdowns has its own dance academy and music studios.
Co-curricular activities include Netball, Soccer(girls & boys), swimming, rugby, chess, debating and public speaking.
Southdowns College has been performing very well on sports during the year.
The sports at the school are: