| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Natalie Adams | SWI | ||
| Nathan Adrian | SWI | 7 December 1988 | |
| Bridgette Alexander | SWI | 25 June 1996 | |
| Haley Anderson | OWS/SWI | 20 November 1991 | |
| Michael Andrew | SWI | 18 April 1999 | |
| Kathleen Baker | SWI | 28 February 1997 | |
| Cassidy Bayer | SWI | 9 September 1999 | |
| Christina Bechtel | SWI | 24 June 1993 | |
| Elizabeth Beisel | SWI | 18 August 1992 | |
| Gunnar Bentz | SWI | 3 January 1996 | |
| Amy Bilquist | SWI | 11 August 1997 | |
| Lisa Bratton | SWI | 5 May 1996 | |
| Emily Cameron | SWI/TRI | 28 September 1994 | |
| Michael Chadwick | SWI | 15 April 1995 | |
| Pace Clark | SWI | 24 June 1994 | |
| Lindsey Clary | SWI | ||
| Tyler Clary | SWI | 12 March 1989 | |
| Jack Conger | SWI | 26 September 1994 | |
| Will Copeland | SWI | 21 April 1986 | |
| Kevin Cordes | SWI | 13 August 1993 | |
| Andrea Cottrell | SWI | 30 June 1995 | |
| Natalie Coughlin | SWI | 23 August 1982 | |
| Hannah Cox | SWI | 15 January 1998 | |
| Madisyn Cox | SWI | 30 May 1995 | |
| Ali DeLoof | SWI | 14 August 1994 | |
| Abrahm DeVine | SWI | 3 September 1996 | |
| Maya DiRado | SWI | 5 April 1993 | |
| Claire Donahue | SWI | 12 January 1989 | |
| Caeleb Dressel | SWI | 16 August 1996 | |
| Conor Dwyer | SWI | 10 January 1989 | |
| Ella Eastin | SWI | 28 March 1997 | |
| Anthony Ervin | SWI | 26 May 1981 | |
| Jimmy Feigen | SWI | 26 September 1989 | |
| Nic Fink | SWI | 3 July 1993 | |
| Bobby Finke | SWI | 6 November 1999 | |
| Hali Flickinger | SWI | 7 July 1994 | |
| Missy Franklin | SWI | 10 May 1995 | |
| Bethany Galat | SWI | 10 August 1995 | |
| Danielle Galyer | SWI | 25 September 1995 | |
| Sarah Gibson | SWI | 20 April 1995 | |
| Will Glass | SWI | ||
| Matt Grevers | SWI | 26 March 1985 | |
| Sean Grieshop | SWI | 23 November 1998 | |
| Zane Grothe | OWS/SWI | 22 April 1992 | |
| Townley Haas | SWI | 13 December 1996 | |
| Sarah Haase | SWI | 31 May 1994 | |
| Molly Hannis | SWI | 13 March 1992 | |
| Jessica Hardy | SWI | 12 March 1987 | |
| Zach Harting | SWI | 27 August 1997 | |
| Ryan Held | SWI | 27 June 1995 | |
| Sarah Henry | SWI | 13 January 1992 | |
| Logan Houck | SWI | ||
| Connor Jaeger | SWI | 30 April 1991 | |
| B. J. Johnson | SWI | 20 April 1987 | |
| Cullen Jones | SWI | 29 February 1984 | |
| Matthew Josa | SWI | 31 March 1995 | |
| Chase Kalisz | SWI | 7 March 1994 | |
| Austin Katz | SWI | 19 March 1999 | |
| Madison Kennedy | SWI | 22 December 1987 | |
| Lilly King | SWI | 10 February 1997 | |
| Katrina Konopka | SWI | 14 April 1997 | |
| Breeja Larson | SWI | 16 April 1992 | |
| Micah Lawrence | SWI | 20 July 1990 | |
| Annie Lazor | SWI | 17 August 1994 | |
| Katie Ledecky | SWI | 17 March 1997 | |
| Sean Lehane | SWI | 21 November 1994 | |
| Caitlin Leverenz | SWI | 26 February 1991 | |
| Will Licon | SWI | 25 August 1994 | |
| Jay Litherland | SWI | 24 August 1995 | |
| Ryan Lochte | SWI | 3 August 1984 | |
| Simone Manuel | SWI | 2 August 1996 | |
| Melanie Margalis | SWI | 30 December 1991 | |
| Ruby Martin | SWI | ||
| Michael McBroom | SWI | 16 May 1991 | |
| Brendan McHugh | SWI | 11 April 1990 | |
| Katie McLaughlin | SWI | 9 July 1997 | |
| Katie Meili | SWI | 16 April 1991 | |
| Cody Miller | SWI | 9 January 1992 | |
| Katherine Mills | SWI | 21 March 1989 | |
| Hellen Moffitt | SWI | 21 May 1995 | |
| Hannah Moore | OWS/SWI | 22 August 1996 | |
| Ryan Murphy | SWI | 2 July 1995 | |
| Lia Neal | SWI | 13 February 1995 | |
| David Nolan | SWI | ||
| Robert Owen | SWI | ||
| Stephanie Peacock | OWS/SWI | 8 July 1992 | |
| Jacob Pebley | SWI | 17 September 1993 | |
| Michael Phelps | SWI | 30 June 1985 | |
| Tim Phillips | SWI | 30 November 1990 | |
| Blake Pieroni | SWI | 15 November 1995 | |
| David Plummer | SWI | 9 October 1985 | |
| Josh Prenot | SWI | 28 July 1993 | |
| Patrick Ransford | SWI | 8 September 1996 | |
| Jonathan Roberts | SWI | 8 September 1995 | |
| Cierra Runge | SWI | 7 March 1996 | |
| Hannah Saiz | SWI | ||
| Sierra Schmidt | SWI | 6 May 1998 | |
| Allison Schmitt | SWI | 7 June 1990 | |
| Josh Schneider | SWI | 11 January 1988 | |
| Emma Schoettmer | SWI | ||
| Andrew Seliskar | SWI | 26 September 1996 | |
| John Shebat | SWI | 17 February 1997 | |
| Tom Shields | SWI | 11 July 1991 | |
| Grant Shoults | SWI | 6 June 1997 | |
| Meghan Small | SWI | 25 May 1998 | |
| Clara Smiddy | SWI | 4 January 1996 | |
| Clark Smith | SWI | 17 April 1995 | |
| Giles Smith | SWI | 28 November 1991 | |
| Leah Smith | SWI | 19 April 1995 | |
| Olivia Smoliga | SWI | 12 October 1994 | |
| Austin Snyder | SWI | ||
| Hannah Stevens | SWI | 9 May 1995 | |
| Kendyl Stewart | SWI | 17 August 1994 | |
| Hennessey Stuart | SWI | ||
| Seth Stubblefield | SWI | 21 July 1993 | |
| Austin Surhoff | SWI | 27 November 1990 | |
| Charlie Swanson | SWI | 20 February 1998 | |
| True Sweetser | SWI | ||
| Jake Taylor | SWI | ||
| Michael Taylor | SWI | 19 December 1998 | |
| Marcus Titus | SWI | 20 May 1986 | |
| Miranda Tucker | SWI | 8 June 1997 | |
| Ashley Twichell | OWS/SWI | 16 June 1989 | |
| Dillon Virva | SWI | 27 December 1993 | |
| Dana Vollmer | SWI | 13 November 1987 | |
| Erin Voss | SWI | 1998 | |
| Lindsay Vrooman | SWI | 12 October 1991 | |
| Amanda Weir | SWI | 11 March 1986 | |
| Abbey Weitzeil | SWI | 3 December 1996 | |
| Christopher Wieser | SWI | 19 December 1995 | |
| Jordan Wilimovsky | OWS/SWI | 22 April 1994 | |
| Andrew Wilson | SWI | 16 September 1993 | |
| Kelsi Worrell | SWI | 15 July 1994 |