January 1, 1973
1973 World Aquatics Championships — 1973 edition of the World Aquatics Championships
1973 CONCACAF Championship — 1973 edition of the CONCACAF Championship association football competition
1973 European Super Cup — football tournament
1973–74 European Cup — 19th season of the UEFA club football tournament
1973 Formula One season — sports season
1973 World Women's Handball Championship — 1973 edition of the World Women's Handball Championship
Eurovision Song Contest 1973 — 18th edition of the Eurovision Song Contest
1973 OFC Nations Cup — international football competition
EuroBasket 1973 — Basketball tournament
1972 European Super Cup — tournament