Asteroids discovered on July 21
36 named asteroids.
| # | Asteroid | Discovered | Discoverer |
|---|---|---|---|
| 1 | (1096) Reunerta | 1928-07-21 | H. E. Wood |
| 2 | (1358) Gaika | 1935-07-21 | C. Jackson |
| 3 | (2585) Irpedina | 1979-07-21 | N. S. Chernykh |
| 4 | (3298) Massandra | 1979-07-21 | N. S. Chernykh |
| 5 | (4013) Ogiria | 1979-07-21 | N. S. Chernykh |
| 6 | (4884) Bragaria | 1979-07-21 | N. S. Chernykh |
| 7 | (4964) Kourovka | 1979-07-21 | N. S. Chernykh |
| 8 | (5803) Otzi | 1984-07-21 | A. Mrkos |
| 9 | (12401) Tucholsky | 1995-07-21 | F. Borngen |
| 10 | (19263) Lavater | 1995-07-21 | F. Borngen |
| 11 | (16742) Zink | 1996-07-21 | Ticha, J., Tichy, M. |
| 12 | (12872) Susiestevens | 1998-07-21 | LINEAR |
| 13 | (20401) Janghyunpark | 1998-07-21 | LINEAR |
| 14 | (30541) Delgadillo | 2001-07-21 | LONEOS |
| 15 | (30562) Guttler | 2001-07-21 | LONEOS |
| 16 | (32519) Timholt | 2001-07-21 | LONEOS |
| 17 | (32520) Jontihorner | 2001-07-21 | LONEOS |
| 18 | (32525) Kynanhughson | 2001-07-21 | LONEOS |
| 19 | (34696) Risoldi | 2001-07-21 | Boattini, A., Tombelli, M. |
| 20 | (51829) Williemccool | 2001-07-21 | NEAT |
| 21 | (82463) Mluigiaborsi | 2001-07-21 | Tesi, L., Forti, G. |
| 22 | (82464) Jaroslavbocek | 2001-07-21 | Pravec, P., Sarounova, L. |
| 23 | (108702) Michelefoparri | 2001-07-21 | Tombelli, M., Forti, G. |
| 24 | (135041) Lorenzofranco | 2001-07-21 | Tesi, L., Tombelli, M. |
| 25 | (216591) Coetzee | 2002-07-21 | G. Masi |
| 26 | (175397) Oumousangare | 2006-07-21 | Mt. Lemmon Survey |
| 27 | (255587) Gardenia | 2006-07-21 | |
| 28 | (611070) Hsurueron | 2006-07-21 | Q.-z. Ye H.-C. Lin |
| 29 | (241113) Zhongda | 2007-07-21 | Ye, Q.-z., Lin, H.-C. |
| 30 | (300286) Zintun | 2007-07-21 | Q.-z. Ye C.-S. Lin |
| 31 | (600867) Kinghu | 2007-07-21 | LUSS |
| 32 | (663467) Limeishu | 2007-07-21 | Q.-z. Ye C.-S. Lin |
| 33 | (663468) Liaochichun | 2007-07-21 | Q.-z. Ye C.-S. Lin |
| 34 | (225232) Kircheva | 2009-07-21 | |
| 35 | (406957) Kochetova | 2009-07-21 | |
| 36 | (718629) Wangzhenru | 2017-07-21 | PMO NEO Survey Program |