Full name: Ian Lowell Crocker
Gender: Male
Height: 6-3.5 (193 cm)
Weight: 190 lbs (86 kg)
Born: August 31, 1982 in Portland, Maine, United States
Affiliations: Portland Porpoise, Portland (USA) / Texas Longhorns, Austin (USA)
Country: 
United States
Sport: Swimming
Medals: 3 Gold, 1 Silver, 1 Bronze (5 Total)
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 2000 Summer | 18 | Sydney | Swimming | Men's 100 metres Butterfly | United States | USA | 4 | ||
| 2000 Summer | 18 | Sydney | Swimming | Men's 4 × 100 metres Medley Relay | United States | USA | 1 | Gold | |
| 2004 Summer | 21 | Athina | Swimming | Men's 100 metres Freestyle | United States | USA | 17T | ||
| 2004 Summer | 21 | Athina | Swimming | Men's 4 × 100 metres Freestyle Relay | United States | USA | 3 | Bronze | |
| 2004 Summer | 21 | Athina | Swimming | Men's 100 metres Butterfly | United States | USA | 2 | Silver | |
| 2004 Summer | 21 | Athina | Swimming | Men's 4 × 100 metres Medley Relay | United States | USA | 1 | Gold | |
| 2008 Summer | 25 | Beijing | Swimming | Men's 100 metres Butterfly | United States | USA | 4 | ||
| 2008 Summer | 25 | Beijing | Swimming | Men's 4 × 100 metres Medley Relay | United States | USA | 1 | Gold |
| Games | Age | City | Sport | Country | Phase | Unit | Rank | T | |
|---|---|---|---|---|---|---|---|---|---|
| 2004 Summer | 21 | Athina | Swimming | United States | Round One | Heat Seven | 6 | 49.73 |
| Games | Age | City | Sport | Team | NOC | Phase | Unit | Rank | T | IST | CTAS | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2004 Summer | 21 | Athina | Swimming | United States | USA | Final | 3 | 3:14.62 | 50.05 | 50.05 |
| Games | Age | City | Sport | Country | Phase | Unit | Rank | T | RT | L | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 Summer | 18 | Sydney | Swimming | United States | Final | 4 | 52.44 | ||||
| 2000 Summer | 18 | Sydney | Swimming | United States | Semi-Finals | Heat Two | 2 | QU | 52.82 | ||
| 2000 Summer | 18 | Sydney | Swimming | United States | Round One | Heat Six | 4 | QU | 53.45 | ||
| 2004 Summer | 21 | Athina | Swimming | United States | Final | 2 | 51.29 | ||||
| 2004 Summer | 21 | Athina | Swimming | United States | Semi-Finals | Heat Two | 2 | QU | 51.83 | ||
| 2004 Summer | 21 | Athina | Swimming | United States | Round One | Heat Eight | 1 | QU | 52.03 | ||
| 2008 Summer | 25 | Beijing | Swimming | United States | Final | 4 | 51.13 | 0.73 | 6 | ||
| 2008 Summer | 25 | Beijing | Swimming | United States | Semi-Finals | Heat Two | 2 | QU | 51.27 | 0.72 | 1 |
| 2008 Summer | 25 | Beijing | Swimming | United States | Round One | Heat Eight | 3 | QU | 51.95 | 0.71 | 4 |
| Games | Age | City | Sport | Team | NOC | Phase | Unit | Rank | T | IST | CTAS | RT | L | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 Summer | 18 | Sydney | Swimming | United States | USA | Final | 1 | WR | 3:33.73 | 52.10 | 2:45.81 | |||
| 2004 Summer | 21 | Athina | Swimming | United States | USA | Final | 1 | WR | 3:30.68 | 50.28 | 2:43.10 | |||
| 2008 Summer | 25 | Beijing | Swimming | United States | USA | Round One | Heat Two | 1 | QU | 3:32.75 | 50.85 | 2:44.79 | 0.42 | 4 |
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