I World Rhythmic Gymnastics Championships were held in Budapest, Hungary on 7 and 8 December 1963.
Each country could send up to three gymnasts. Gymnasts performed two routines - freehand (no apparatus) and with apparatus. The apparatus was not specified; those used included hoops, balls, and pairs of handheld streamers.
There were 28 competitors from 10 countries: Czechoslovakia, Soviet Union, Bulgaria, Hungary, Finland, German Democratic Republic, Romania, Poland, Spain and Yugoslavia.