| Election Name: | 1851 South Australian colonial election |
| Country: | South Australia |
| Flag Image: | Flag of the United Kingdom.svg |
| Type: | parliamentary |
| Ongoing: | no |
| Next Election: | 1855 South Australian colonial election |
| Next Year: | 1855 |
| Seats For Election: | 16 of 24 seats in the South Australian Legislative Council. |
| Election Date: | 21 February 1851 |
Colonial elections were held in South Australia on 21 February 1851. Only 16 of the 24 seats in the unicameral Legislative Council were popularly elected but was the first occurrence of voting franchise in the colony. The 1855 election was the second and last of this type. The 1857 election was the first contest which popularly elected all members to the new bicameral Parliament of South Australia.
The first six Governors of South Australia oversaw governance from proclamation in 1836 until self-government in 1857.