Swimming at the 1984 Summer Olympics

The swimming competitions of the 1984 Summer Olympics were held at the McDonald's Olympic Swim Stadium, located on the University of Southern California (USC) campus. There were a total of 494 participants from 67 countries competing.

This was the first Olympic Games at which only two swimmers per country, per event, were permitted; previously, three swimmers were allowed and many countries would sweep the medal stand. In addition, the 200-metre individual medley for both men and women returned to the program from a twelve-year absence, following a proposal by the United States Olympic & Paralympic Committee (USOPC).

Medal table

Medal summary

Men's events

| 100 m freestyle

| || 49.80

| || 50.24

| || 50.31

| 200 m freestyle

| || 1:47.44

| || 1:49.10

| || 1:49.69

| 400 m freestyle

| || 3:51.23

| || 3:51.49

| || 3:51.79

| 1500 m freestyle

| || 15:05.20

| || 15:10.59

| || 15:12.11

| 100 m backstroke

| || 55.79

| || 56.35

| || 56.49

| 200 m backstroke

| || 2:00.23

| || 2:01.75

| || 2:02.37

| 100 m breaststroke

| || 1:01.65

| || 1:01.99

| || 1:02.97

| 200 m breaststroke

| || 2:13.34

| || 2:15.79

| || 2:17.41

| 100 m butterfly

| || 53.08

| || 53.23

| || 53.85

| 200 m butterfly

| || 1:57.04

| || 1:57.40

| || 1:57.51

| 200 m individual medley

| || 2:01.42

| || 2:03.05

| || 2:04.38

| 400 m individual medley

| || 4:17.41

| || 4:18.45

| || 4:20.50

|-valign="top"

| 4 × 100 m freestyle relay

| Chris Cavanaugh Mike Heath Matt Biondi Rowdy Gaines Tom Jager* Robin Leamy*|| 3:19.03

| Greg Fasala Neil Brooks Michael Delany Mark Stockwell || 3:19.68

| Thomas Lejdström Per Johansson Bengt Baron Mikael Örn Rikard Milton* Michael Söderlund*|| 3:22.69

|-valign="top"

| 4 × 200 m freestyle relay

| Mike Heath David Larson Jeff Float Bruce Hayes Geoff Gaberino* Richard Saeger*|| 7:15.69

| Thomas Fahrner Dirk Korthals Alexander Schowtka Michael Gross Rainer Henkel* || 7:15.73

| Neil Cochran Paul Easter Paul Howe Andrew Astbury || 7:24.78

|-valign="top"

| 4 × 100 m medley relay

| Rick Carey Steve Lundquist Pablo Morales Rowdy Gaines Dave Wilson* Richard Schroeder* Mike Heath* Tom Jager* || 3:39.30

| Mike West Victor Davis Tom Ponting Sandy Goss || 3:43.23

| Mark Kerry Peter Evans Glenn Buchanan Mark Stockwell Jon Sieben* Neil Brooks* || 3:43.25

<nowiki>*</nowiki> Swimmers who participated in the heats only and received medals.

Women's events

|-valign="top"

|rowspan=2 | 100 m freestyle

| ||rowspan=2| 55.92

|rowspan=2 |none awarded ||rowspan=2|

|rowspan=2 | ||rowspan=2| 56.08

| 200 m freestyle

| || 1:59.23

| || 1:59.50

| || 1:59.69

| 400 m freestyle

| || 4:07.10

| || 4:10.29

| || 4:11.49

| 800 m freestyle

| || 8:24.95

| || 8:30.73

| || 8:32.60

| 100 m backstroke

| || 1:02.55

| || 1:02.63

| || 1:02.91

| 200 m backstroke

| || 2:12.38

| || 2:13.04

| || 2:13.29

| 100 m breaststroke

| || 1:09.88

| || 1:10.69

| || 1:10.70

| 200 m breaststroke

| || 2:30.38

| || 2:31.15

| || 2:31.40

| 100 m butterfly

| || 59.26

| || 1:00.19

| || 1:01.36

| 200 m butterfly

| || 2:06.90

| || 2:10.56

| || 2:11.91

| 200 m individual medley

| || 2:12.64

| || 2:15.17

| || 2:15.92

| 400 m individual medley

| || 4:39.24

| || 4:48.30

| || 4:48.57

|-valign="top"

| 4 × 100 m freestyle relay

| Jenna Johnson Carrie Steinseifer Dara Torres Nancy Hogshead Jill Sterkel* Mary Wayte* || 3:43.43

| Annemarie Verstappen Desi Reijers Elles Voskes Conny van Bentum Wilma van Velsen* || 3:44.40

| Iris Zscherpe Susanne Schuster Christiane Pielke Karin Seick || 3:45.56

|-valign="top"

| 4 × 100 m medley relay

| Theresa Andrews Tracy Caulkins Mary T. Meagher Nancy Hogshead Betsy Mitchell* Susan Rapp* Jenna Johnson* Carrie Steinseifer* || 4:08.34

| Svenja Schlicht Ute Hasse Ina Beyermann Karin Seick || 4:11.97

| Reema Abdo Anne Ottenbrite Michelle MacPherson Pamela Rai || 4:12.98

<nowiki>*Swimmers who participated in the heats only and received medals.</nowiki>

Participating nations

494 swimmers from 67 nations competed.