2009-10 Williams Men's Swimming & Diving
| No. | Name | Pos. | Cl. | Ht. | Wt. | Hometown/High School |
| John Armstrong | Free, IM | 13 | Gladwyne, PA/Friends Central School | |||
| Henry Blackford | Sprint Free/Fly | 10 | New York, NY/Hotchkiss School | |||
| Sam Blum | Free, Back | 10 | Westfield, NJ/Pingry School | |||
| Chris Corbett | Breast, IM | 13 | Highland Heights, OH/Western Reserve Academy | |||
| Andrew D'Ignazio | Sprint Free | 11 | Wallingford, PA/Strath Haven High | |||
| Andrew Derosiers | Breast | 13 | Stetson, ME/ | |||
| Dan Doran | Back/Free | 12 | Wheaton, IL/Wheaton Warrneville South High School | |||
| Paul Dyrkacz | Free, Breast, IM | 13 | Wilbraham, MA/Minnechaug Regional High School | |||
| Chris Faux | Sprint, Free | 13 | Atlanta, GA/Westminster School | |||
| Rob Gearity | Diving | 10 | Beachwood, NJ/Toms River High School South | |||
| John Guiffre | Free/Fly | 12 | Scotch Plains, NJ/Pingry School | |||
| Adam Hollander | Sprint Free/Back | 10 | Los Angeles, CA/Milken Community High School | |||
| Jordan Hollander | Back/IM | 10 | Los Angeles, CA/Milken Community High School | |||
| Stuart Horgan | Free/IM/Fly | 12 | Hudson, OH/Western Reserve Academy | |||
| Daeus Jorento | Breast | 13 | Saint Paul, MN/Saint Paul Central High School | |||
| Edwin Layng | Sprint Free/Fly | 10 | Summit, NJ/Pingry School | |||
| Alex Long | Diving | 12 | Atlanta, GA/Westminster School | |||
| Worth MacDonald | Back | 11 | Atlanta, GA/Mercersburg Academy | |||
| Ryan Marrano | Free/Fly/IM | 12 | Harrison, NY/Iona Prep | |||
| Zane Martin | Free | 13 | Housatonic, MA/Monument Mountain Regional High School | |||
| Greg McElroy | Breast | 12 | Wyckoff, NJ/Ramapo High School | |||
| Christopher Milliken | Diving | 10 | Portland, ME/ | |||
| Chris Picardo | Free, Fly | 13 | Mercer Island, WA/Mercer Island High School | |||
| Graham Righi | Sprint, Free | 13 | Phoenix, AZ/Brophy College Prep | |||
| Gary Roberson | Mid Distance Free | 11 | Tigard, OR/Tualatin High | |||
| Peter Skipper | Sprint, Free, Fly | 13 | Boston, MA/Boston College High School | |||
| Austin Stanley | Breast, Free | 10 | Houston, TX/ | |||
| Scott Symonds | Free | 13 | Denver, CO/George Washington High School | |||
| David Taylor | IM, Free, Back | 13 | Dallas, TX/St. Mark's School of Texas | |||
| David Thompson | Free/Back/Fly | 11 | Wellesley, MA/Wellesley High School | |||
| Philip Treesh | Free | 13 | Darien, CT/Darien High School | |||
| Tom Vieth | Free | 13 | Louisville, KY/Louisville Collegiate School | |||
| Ben Wampler | Sprint Free | 11 | Glencoe, IL/New Trier High School | |||
|
Head Coach: Steve Kuster |
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