The 1902 South Australian state election was held on 3 May 1902 following the dissolution of both houses. All 42 seats in the South Australian House of Assembly were up for election, and all 18 seats in the Legislative Council. The House had a reduction of 12 seats compared to the previous election. The Council was reduced from 6 members in each of four districts to 6 members from Central District and four from each of North-Eastern, Northern and Southern Districts. The incumbent liberal government led by Premier of South Australia John Jenkins in an informal coalition with the conservatives defeated the United Labor Party (ULP) led by Thomas Price. Each of the 13 districts elected multiple members, with voters casting multiple votes.

The premier of South Australia is the head of government in the state of South Australia, Australia. The Government of South Australia follows the Westminster system, with a Parliament of South Australia acting as the legislature. The premier is appointed by the governor of South Australia, and by modern convention holds office by virtue of their ability to command the support of a majority of members of the lower house of Parliament, the House of Assembly.