Puerto Rico competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 80 competitors, 73 men and 7 women, took part in 74 events in 12 sports.
Sweden competed at the 1980 Summer Olympics in Moscow, Soviet Union. 145 competitors, 122 men and 23 women, took part in 102 events in 18 sports.
Bulgaria competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 158 competitors, 105 men and 53 women, took part in 108 events in 14 sports.
Madagascar competed at the 1980 Summer Olympics in Moscow, USSR. The nation returned to the Olympic Games after boycotting the 1976 Summer Olympics.
Libya competed at the 1980 Summer Olympics in Moscow, USSR. The nation returned to the Olympic Games after boycotting the 1976 Summer Olympics. 29 competitors, 27 men and 2 women, took part in 20 events in 5 sports.
The 1976 Summer Olympics were held in Montreal, Quebec, Canada; 26 events in swimming were contested. There was a total of 471 participants from 51 countries competing.
Mexico competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 97 competitors, 92 men and 5 women, took part in 54 events in 17 sports.
The Netherlands competed at the 1976 Summer Olympics in Montreal, Quebec, Canada. 108 competitors, 72 men and 36 women, took part in 58 events in 11 sports.
The men's 100 metre freestyle event at the 1976 Summer Olympics took place between July 24 and 25. This was the first time in history that the 100m freestyle was swum under 50 seconds. There were 41 competitors from 27 nations. Nations had been limited to three swimmers each since the 1924 Games. The event was won by Jim Montgomery of the United States, the nation's second consecutive and tenth overall victory in the men's 100 metre freestyle. His countryman Jack Babashoff took silver. Peter Nocke's bronze was the first medal for West Germany in the event, though the United Team of Germany had won a bronze in 1964.
The men's 400 metre freestyle event for the 1976 Summer Olympics was held in Montreal. The event took place on Tuesday, 22 July.
The men's 1500 metre freestyle event for the 1976 Summer Olympics was held in Montreal. The event took place on 19 and 20 July.
The men's 4 × 200 m freestyle relay event for the 1976 Summer Olympics was held in Montreal. The event took place on Wednesday, 21 July.
The women's 200 metre freestyle event for the 1976 Summer Olympics was held in Montreal. The event took place on 22 July.
The women's 400 metre freestyle event for the 1976 Summer Olympics was held in Montreal. The event took place on 20 July.
The final of the women's 800 metre freestyle event for the 1976 Summer Olympics was held on July 25, 1976, in Montreal, after the preliminary heats on July 24, 1976.
The women's 100 metre backstroke event for the 1976 Summer Olympics was held in Montreal. The event took place on 20 and 21 July 1976.
The women's 100 metre breaststroke event for the 1976 Summer Olympics was held in Montreal. The event took place between 22–24 July 1976.
The women's 100 metre butterfly event for the 1976 Summer Olympics was held in Montreal. The event took place on 21 & 22 July 1976.
The women's 4 × 100 metre freestyle relay event for the 1976 Summer Olympics was held in Montreal.
The women's 4 × 100 metre medley relay event for the 1976 Summer Olympics was held in Montreal.
