Athletes
| # | Athlete | G · S · B | Total | ||
|---|---|---|---|---|---|
| 1 | Deborah Rodriguez Women · 2008–26 | 2 Dec 1992 | 400m, 800m, 400m hurdles +1 | 21 gold 8 silver 8 bronze | 37 |
| 2 | Andres Silva Men · 2002–21 | 27 Mar 1986 | 200m, 400m, 110m hurdles (91.4 cm) +3 | 20 gold 4 silver 4 bronze | 28 |
| 3 | Emiliano Lasa Men · 2012–26 | 25 Jan 1990 | Long jump | 7 gold 8 silver 6 bronze | 21 |
| 4 | Maria Pia Fernandez Women · 2012–25 | 1 Apr 1995 | 800m, 1500m, 3000m +1 | 7 gold 8 silver 6 bronze | 21 |
| 5 | Valentin Soca Men · 2022–26 | 24 Jul 2002 | 1500m, 5000m, 10,000m | 5 gold 1 silver 1 bronze | 7 |
| 6 | Heber Viera Men · 1996–2007 | 29 Apr 1979 | 100m, 200m, relays | 4 gold 9 silver 10 bronze | 23 |
| 7 | Manuela Rotundo Women · 2021–25 | 19 Jul 2004 | Javelin throw, Javelin throw (500 g) | 4 gold 2 silver 2 bronze | 8 |
| 8 | Gonzalo Gervasini Men · 2021–23 | 4 Oct 2005 | 800m, 1500m, relays | 4 gold 1 silver 1 bronze | 6 |
| 9 | Monica Falcioni Women · 1984–2003 | 10 Oct 1968 | Long jump, Triple jump | 2 gold 2 silver 4 bronze | 8 |
| 10 | Maria Mello Women · 2010–13 | 2 Jun 1994 | Javelin throw | 2 gold 1 silver 2 bronze | 5 |
| 11 | Lorena Aires Women · 2012–26 | 8 Aug 1995 | High jump | 1 gold 6 silver 0 bronze | 7 |
| 12 | Santiago Catrofe Men · 2021–26 | 13 Feb 1999 | 1500m, 5000m, 10,000m | 1 gold 3 silver 2 bronze | 6 |
| 13 | Jessica Miller Women · 2002–04 | 24 Dec 1985 | 100m hurdles (76.2 cm), 400m hurdles | 1 gold 2 silver 1 bronze | 4 |
| 14 | Antonella Bonomi Women · 2026 | 5 Feb 2009 | 1500m, 3000m, 2000m steeplechase +1 | 1 gold 1 silver 2 bronze | 4 |
| 15 | Dahiana Lopez Women · 2017–18 | 31 Aug 2001 | Discus throw | 1 gold 1 silver 1 bronze | 3 |
| 16 | Silvina Gil Women · 2021–22 | 19 Sep 2005 | High jump | 1 gold 1 silver 1 bronze | 3 |
| 17 | Santiago Lazar Men · 2024–26 | 24 May 2008 | 100m, 200m | 1 gold 1 silver 1 bronze | 3 |
| 18 | Nestor Garcia Men · 1997–2001 | 6 Jul 1975 | 5000m, 10,000m | 1 gold 1 silver 0 bronze | 2 |
| 19 | Martin Castanares Men · 2013–14 | 9 Aug 1997 | Pole vault | 1 gold 1 silver 0 bronze | 2 |
| 20 | Aldana Sabatel Women · 2013–14 | 10 Jan 1996 | U20 race, U18 race | 1 gold 1 silver 0 bronze | 2 |
| 21 | Claudia Ramirez Women · 2007 | 13 Jun 1988 | 3000m, 5000m, U20 race | 1 gold 0 silver 2 bronze | 3 |
| 22 | Eduardo Gregorio Men · 2006 | 4 Jan 1989 | 1500m, U18 race | 1 gold 0 silver 1 bronze | 2 |
| 23 | Martina Bonaudi Women · 2021–22 | 13 Apr 2005 | 400m, relays | 1 gold 0 silver 1 bronze | 2 |
| 24 | Jorge Collares Men · 2012 | 11 Oct 1995 | 800m | 1 gold 0 silver 0 bronze | 1 |
| 25 | Marcela Britos Women · 2004–07 | 26 Feb 1985 | 800m | 0 gold 3 silver 1 bronze | 4 |
Only international medals count: national championship titles are left out.