Athletics at the 1964 Summer Olympics – Women's 400 metres

{{Infobox Olympic event

|event = Women's 400 metres

|games = 1964 Summer

|image =

|caption =

|venue = Olympic Stadium

|dates = 15–17 October 1964

|competitors = 23

|nations = 17

|win_value = 52.0 {{OlyR|athletics}}

|longnames = yes

|gold = Betty Cuthbert

|goldNOC = AUS

|silver = Ann Packer

|silverNOC = GBR

|bronze = Judy Amoore

|bronzeNOC = AUS

|next = 1968

}}

{{AthleticsAt1964SummerOlympics}}

The women's 400 metres was the second-longest of the four women's track races in the Athletics at the 1964 Summer Olympics program in Tokyo. It was held on 15 October, 16 October, and 17 October 1964. 23 athletes from 17 nations entered. The first round was held on 15 October, the semifinals on 16 October, and the final on 17 October. The 1964 Summer Olympics were the first to feature the women's 400 metres.{{cite web |url=https://www.sports-reference.com/olympics/summer/1964/ATH/womens-400-metres.html |archive-url=https://web.archive.org/web/20200417174958/https://www.sports-reference.com/olympics/summer/1964/ATH/womens-400-metres.html |url-status=dead |archive-date=17 April 2020 |title=Athletics at the 1964 Tokyo Summer Games: Women's 400 metres |access-date=31 July 2017 |work=sports-reference.com}}

{{TOC limit|3}}