Afghanistan (AFG) - Kimia Yousofi (women’s 100m)
Albania (ALB) - Luiza Gega (women’s 3000m steeplechase)
Andorra (AND) - Pol Moya (men’s 800m)
Antigua and Barbuda (ANT) - Cejhae Greene (men’s 100m)
Bahamas (BAH) - Donald Thomas (men’s high jump)
Belize (BIZ) - Samantha Dirks (women’s 400m) and Shaun Gill (men’s 100m)
Belgium (BEL) - Nafissatou Thiam (heptathlon)
Bosnia and Herzegovina (BIH) - Amel Tuka (men’s 800m)
Botswana (BOT) - Amantle Montsho (women’s 400m)
Burkina Faso (BUR) - Hugues Fabrice Zango (men’s triple jump)
British Virgin Islands (IVB) - Kyron McMaster (men’s 400m hurdles)
Cambodia (CAM) - Sokong Pen (men’s 100m)
Cape Verde (CPV) - Jordin Andrade (men’s 400m hurdles)
Central African Republic (CAF) - Francky Mbotto (men’s 800m)
Colombia (COL) - Caterine Ibarguen (women’s triple jump)
Comoros (COM) - Amed Elna (women’s 100m) and Fadane Hamadi (men’s 110m hurdles)
Congo (CGO) - Natacha Ngoye Akamabi (women’s 100m)
Costa Rica (CRC) - Andrea Vargas (100m hurdles)
Croatia (CRO) - Sandra Perkovic (women’s discus)
Cuba (CUB) - Yaime Perez (women’s discus)
Cyprus (CYP) - Milan Trajkovic (110m hurdles)
Denmark (DEN) - Sara Peterson (women’s 400m hurdles)
Dominica (DMA) - Thea Lafond (women’s triple jump) and Dennick Luke (men’s 800m)
Equatorial Guinea (GEQ) - Alba Mbo Nchama (women’s 100m) and Benjamin Enzema (men’s 1500m)
Eritrea (ERI) - Nazret Weldu (women’s marathon)
Gambia (GAM) - Gina Bass (women’s 100m and 200m) and Ebrima Camara (men’s 100m)
Ghana (GHA) - Nadia Eke (women’s triple jump)
Guam (GUM) - Regine Kate Tugade (women’s 100m)
Israel (ISR) - Hanna Minenko (women’s triple jump)
Ivory Coast (CIV) - Marie-Josee Ta Lou (women’s 100m and 200m)
Jamaica (JAM) - Shelly-Ann Fraser-Pryce (women's 100m, 200m and 4x100m)
Kazakhstan (KAZ) - Olga Rypakova (women’s triple jump)
Lao People's Democratic Republic (LAO) - Silina Pha Aphay (women’s 100m)
Liberia (LBR) - Ebony Morrison (women’s 100m hurdles) and Joseph Fahnbulleh (men’s 200m)
Mauritania (MTN) - Houleye Ba (women’s 100m) and Abidine Abidine (men’s 5000m)
Micronesia (FSM) - Scott James Fiti (men’s 100m)
Nauru (NRU) - Jonah Harris (men’s 100m)
Netherlands (NED) - Churandy Martina (men’s 4x100m)
Palau (PLW) - Adrian Justin Jimena Ililau (men’s 100m)
Panama (PAN) - Alonso Edward (men’s 200m)
Portugal (POR) - Nelson Evora (men’s triple jump)
Refugee Olympic Team (EOR) - Tachlowini Gabriyesos (marathon)
Rwanda (RWA) - John Hakizimana (men’s marathon)
Saint Kitts and Nevis (SKN) - Amya Clarke (women’s 100m) and Jason Rogers (men’s 100m)
Saint Lucia (LCA) - Levern Spencer (women’s high jump)
Saint Vincent and the Grenadines (VIN) - Shafiqua Maloney (women’s 800m)
Samoa (SAM) - Alex Rose (men’s discus)
Sao Tome and Principe (STP) - D'Jamila Tavares (women’s 800m)
Saudi Arabia (KSA) - Yasmeen Al Dabbagh (women's 100m)
Sierra Leone (SLE) - Maggie Barrie (women’s 100m)
Solomon Islands (SOL) - Sharon Firisua (women’s marathon)
Somalia (SOM) - Ali Idow Hassan (men’s 1500m)
South Sudan (SSD) - Lucia Moris (women’s 200m) and Abraham Guem (men’s 1500m)
Switzerland (SUI) - Mujinga Kambundji (women's 100m, 200m and 4x100m)
Timor Leste (TLS) - Felisberto de Deus (men’s 1500m)
Trinidad and Tobago (TTO) - Kelly-Ann Baptiste (women’s 100m and 4x100m)
Tuvalu (TUV) - Matie Stanley (women’s 100m) and Karalo Hepoiteloto Maibuca (men’s 100m)
Uruguay (URU) - Deborah Rodriguez (women’s 800m)
Vietnam (VIE) - Thi Lan Quach (women’s 400m hurdles)