Sir James McCulloch, was a British colonial politician and statesman who served as the fifth premier of Victoria over four non-consecutive terms from 1863 to 1868, 1868 to 1869, 1870 to 1871 and 1875 to 1877. He is the third longest-serving premier in Victorian history.

The premier of Victoria is the head of government of Victoria, Australia. The premier leads the Cabinet of Victoria and selects its ministers. The premier is appointed by the governor of Victoria and must be a member of and command confidence in the Victorian Legislative Assembly, the lower house of the Parliament of Victoria, meaning the support of a majority of Legislative Assembly members. This is usually the leader of the political party that holds a majority of lower house members.