| Anton J. Johnson | |
| State: | Illinois |
| Term Start: | January 3, 1939 |
| Term End: | January 3, 1949 |
| Predecessor: | Chester C. Thompson |
| Successor: | Chauncey W. Reed |
| Birth Date: | 20 October 1878 |
| Birth Place: | Peoria, Illinois |
| Death Place: | Macomb, Illinois |
| Party: | Republican |
Anton Joseph Johnson (October 20, 1878 – April 16, 1958) was a U.S. Representative from Illinois.
Born in Peoria, Illinois to Swedish immigrant parents, Johnson attended the public schools and the School of Agriculture of the University of Missouri in Columbia, Missouri. He served as first sergeant, Fifth Infantry, Company G, Illinois National Guard from 1898 to 1901. He worked as a letter carrier in Peoria from 1900 to 1913. He engaged in agricultural pursuits near Peoria, Illinois from 1913 to 1921. He engaged in dairy-products manufacturing in Macomb, Illinois from 1926 to 1938. He served as president of the Illinois Milk Dealers' Association 1931–1936. He served as president of the Illinois Dairy Products Association in 1937.
Johnson was elected as a Republican to the Seventy-sixth and to the four succeeding Congresses (January 3, 1939 – January 3, 1949). He was not a candidate for renomination in 1948 to the Eighty-first Congress.
Johnson was elected mayor of Macomb, Illinois, in 1949 for a four-year term but resigned after serving two years. He died in Macomb, Illinois, on April 16, 1958. He was interred in Springdale Cemetery, Peoria, Illinois.