Egerton Lee Batchelor was an Australian politician and trade unionist. He was a pioneer of the Australian Labor Party (ALP) in South Australia, which at the time was known as the United Labor Party (ULP). He was a member of the South Australian House of Assembly (1893–1901), leading the ULP from 1898 until his resignation in 1899 to accept a ministerial post in a non-Labor government, with the party's approval. Batchelor entered federal politics in 1901 and held cabinet posts in the first three ALP governments. He was Minister for Home Affairs (1904) under Chris Watson, and then served two terms as Minister for External Affairs under Andrew Fisher. He suffered a fatal heart attack at the age of 46 while climbing Mount Donna Buang.

The South Australian Labor Party, officially known as the Australian Labor Party (South Australian Branch) and commonly referred to simply as South Australian Labor, is the South Australian Branch of the Australian Labor Party, originally formed in 1891 as the United Labor Party of South Australia. It is one of two major parties in the bicameral Parliament of South Australia, the other being the Liberal Party of Australia (SA Division).