American Junior Records are those ratified by USATF. Junior Records are restricted to athletes who do not turn 20 at any time during the calendar year in which the mark is made.
Symbols: + = event not officially recognized by USATF; (A) = altitude-aided mark–over 1000m of altitude (in affected events only); i = made indoors; p = mark still pending ratification
| Track Events | |||||
| 100 | 9.97 | Trayvon Bromell (Baylor) | Eugene, Oregon | 6/13/14 | |
| 9.93p | Christian Miller (Florida HS) | Clermont, Florida | 4/20/24 | ||
| 200 | 19.69 | Erriyon Knighton (adidas) | Eugene, Oregon | 6/26/22 | |
| 19.49p | Erriyon Knighton (adidas) | Baton Rouge, Louisiana | 4/30/22 | ||
| 400 | 43.87 | Steve Lewis (UCLA) | Seoul, South Korea | 9/28/88 | |
| 600+ | 1:15.49i | Brandon Miller (Texas A&M) | Fayetteville, Arkansas | 12/03/21 | |
| 800 | 1:43.55 | Donavan Brazier (Texas A&M) | Eugene, Oregon | 6/10/16 | |
| 1000+ | 2:.16.46 | Hobbs Kessler (adidas) | Fontvieille, Monaco | 8/10/22 | |
| 1500 | 3:34.36 | Hobbs Kessler (Michigan HS) | Portland, Oregon | 5/29/21 | |
| Mile | 3:51.3 | Jim Ryun (Kansas) | Berkeley, California | 7/17/66 | |
| Steeple | 8:33.8 | John Gregorek (Georgetown) | Philadelphia, Pennsylvania | 5/20/79 | |
| 3000 | 7:49.16 | Galen Rupp (Oregon) | Lignano, Italy | 7/17/05 | |
| 5000 | 13:24.26 | Nico Young (Northern Arizona) | Des Moines, Iowa | 4/23/21 | |
| [note: indoor 13:22.59 by Young in ’21 not ratifiable] | |||||
| 10,000 | 28:18.52 | Galen Rupp (Oregon) | Eugene, Oregon | 5/07/05 | |
| 110 Hurdles | 13.08 | Wayne Davis (North Carolina HS) | Port-of-Spain, Trinidad | 7/31/09 | |
| Senior 110H+ | 13.23 | Renaldo Nehemiah (Maryland) | Zürich, Switzerland | 8/16/78 | |
| 13.18p | Ja’Kobe Tharp (Auburn) | Gainesville, Florida | 5/10/24 | ||
| 13.18p | Ja’Kobe Tharp (Auburn) | Eugene, Oregon | 6/05/24 | ||
| 400 Hurdles | 47.85 | Sean Burrell (LSU) | Eugene, Oregon | 6/11/21 | |
| Relay Events | ||||
| 4 x 100 | 38.62(A) | National Junior Team | San José, Costa Rica | 7/20/19 |
| (Arian Smith, Justin Ofotan, Marcellus Moore, Matthew Boling) | ||||
| (low-altitude)+ | 38.66 | National Team | Grossetto, Italy | 7/18/04 |
| (David Kimmons, Demi Omole, Ivory Williams, LaShawn Merritt) | ||||
| 4 x 400 | 2:59.30(A) | National Junior Team | San José, Costa Rica | 7/21/19 |
| (Frederick Lewis 45.9, Matthew Boling 44.5, Matthew Moorer 45.2, Justin Robinson 43.7) | ||||
| (low-altitude )+ | 3:00.33 | National Team | Trujillo, Peru | 7/23/17 |
| (Brian Herron 45.1, Zach Shinnick 45.1, Sean Hooper 44.73, Josephus Lyles 45.36) | ||||
| Mixed-Sex 4 x 400 | 3:17.69 | National Junior Team | Cali, Colombia | 8/02/22 |
| (Charlie Bartholomew 45.09, Madison Whyte 53.39, Will Sumner 45.97, Kennedy Wade 53.24) | ||||
| Field Events | ||||
| High Jump | 2.31 | 7-7 | Andra Manson (Texas HS) | Kingston, Jamaica | 7/18/02 |
| Pole Vault | 6.05 | 19-10¼ | Mondo Duplantis (Louisiana HS) | Berlin, Germany | 8/12/18 |
| Long Jump | 8.34 | 27-4½ | Randy Williams (USC) | Munich, Germany | 9/08/72 |
| Triple Jump | 17.13 | 56-2½ | Will Claye (Oklahoma) | Fayetteville, Arkansas | 6/13/09 |
| Shot | 22.06 | 72-4½ | Tripp Piperi (Texas) | Tampere, Finland | 7/10/18 |
| Senior Shot+ | 20.65 | 67-9 | Michael Carter (Texas HS) | Boston, Massachusetts | 7/04/79 |
| Discus | 65.34 | 214-4 | Mason Finley (Colorado HS) | Port-of-Spain, Trinidad | 7/31/09 |
| Senior Discus+ | 63.22 | 207-5 | Brian Milne (Penn State) | University Park, Pennsylvania | 3/28/92 |
| Hammer | 80.79 | 265-0 | Conor McCullough (Princeton) | Moncton, New Brunswick | 7/25/10 |
| Senior Hammer+ | 70.78 | 232-3 | Conor McCullough (Princeton) | Princeton, New Jersey | 5/15/10 |
| Javelin | 74.64 | 244-10 | Joe Zimmerman (Washington) | Moncton, New Brunswick | 7/23/10 |
| [Note: statistically acceptable 77.84/255-4 Sam Crouser (Oregon HS) in ’10 never ratified] | ||||
| Multi-Events | ||||
| Decathlon | 8037 | Harrison Williams (Stanford) | Edmonton, Alberta | 7/31–8/01/15 |
| (10.67w, 6.98/22-10¾, 13.71/44-11¾, 2.03/6-8, 48.28 [4182], 14.41, 39.68/130-2, 5.00/16-4¾, 51.77/169-10, 4:29.20 [3855]) | ||||
| Senior Decathlon+ | 7892 | Gunnar Nixon (Arkansas) | Des Moines, Iowa | 6/06–07/12 |
| (10.93w, 23-9½/7.25, 45-½/13.73, 6-8¾/2.05, 48.92 [4177], 14.51, 119-8/36.48, 15-1/4.60, 184-1/56.12, 4:30.41 [3715]) | ||||
| Road Event | ||||
| Marathon+ | 2:15:28 | Paul Gompers (Harvard) | Huntsville, Alabama | 12/10/83 |
| Walk Events | ||||
| 5000 | 20:06.0 | Trevor Barron (South Park TC) | San Diego, California | 6/13/10 |
| 5K(r) | 21:05 | Trevor Barron (New York AC) | Eugene, Oregon | 6/26/11 |
| 10,000 | 41:23.14 | Tyler Sorenson (California HS) | Villeneuve-d’Ascq, France | 7/09/11 |
| 10K(r) | 41:35 | Trevor Barron (New York AC) | Eugene, Oregon | 6/26/11 |
| 20,000 | 1:23:49.4 | Trevor Barron (South Park TC) | Tusula, Finland | 9/04/10 |
| 20K(r) | 1:23:26 | Trevor Barron (New York AC) | Eugene, Oregon | 6/26/11 |
as of June 12, 2024