January 1, 1955
1955 battle in the Chinese Civil War
1955 South American Championship — football tournament
1955 Formula One season — sports season
EuroBasket 1955 — 1955 edition of the FIBA EuroBasket
1955 Mediterranean Games — 2nd edition of the Mediterranean Games
1955–58 Inter-Cities Fairs Cup — football tournament
1955 Cannes Film Festival — film festival edition
1955 Argentine Grand Prix — Formula One motor race held in 1955
Battle of Douar Souadek
Treaty signed between Panama and the United States of America