The First IRF World Juniors championship was in 1989. 2018 was the 30th iteration. 6U and 8U divisions ceased to be held starting in 2014 and were sporadically held in the years prior.
Note: There are some examples of players who represented one country earlier in their career but switched later on. Player countries in this report have been modified to show the country they represented at the time of the event, NOT who they currently represent. Natalia Mendez, Maria Jose Vargas, Mario Mercado, Veronica Guilllemette, Sebastian Fernandez and most recently Diego Garcia are good examples of top players who switched countries mid- or after their junior careers.
| Category | Year | 21U Champ | 18U Champ | 16U Champ | 14U Champ | 12U Champ | 10U Champ | 8U Champ | 8U MB Champ | 6U MB Champ |
| All IRF Girls | 2023 | COL - Rivero, Camila | COL - Rivero, Camila | BOL - Mendez, Natalia Carolina | - Mansilla, Nicol Abril | CRC - Faeth, Larissa | - Garcia, Mary Hinojosa | |||
| All IRF Girls | 2022 | BOL - Barrios, Angelica | BOL - Meneses, Micaela | USA - Ros, Naomi | - Blacutt, Adriana Noelia | - Villacreses, Maria Laura | MEX - Gomez, Michelle | |||
| All IRF Girls | 2021 | BOL - Meneses, Micaela | - Salinas, Krystin | - Mendez, Natalia (Bol) | GUA - Sipac, Jamileth | MEX - Gomez, MIchelle | ||||
| All IRF Girls | 2019 | BOL - Barrios, Angelica | CRC - Ortiz, Maricruz | USA - Mahoney, Heather | USA - Shetty, Sonya | BOL - Mancilla, Nicol | ||||
| All IRF Girls | 2018 | MEX - Mejia, Monserrat | ARG - Centellas, Valeria | BOL - Meneses, Micaela | USA - Ros, Naomi | BOL - Segundo, Liz | ||||
| All IRF Girls | 2017 | MEX - Mejia, Monserrat | BOL - Barrios, Angelica | BOL - Meneses, Micaela | USA - Mahoney, Heather | USA - Shetty, Sonya | ||||
| All IRF Girls | 2016 | USA - Manilla, Erika | GUA - Martinez, Ana Gabriela | BOL - Rivero, Romina | BOL - Meneses, Micaela | MEX - Bonifacio Siller, Carolina | ||||
| All IRF Girls | 2015 | BOL - Mendez, Natalia | GUA - Martinez, Ana Gabriela | BOL - Rivero, Romina | CRC - Ortiz, Maricruz | USA - Mahoney, Heather | ||||
| All IRF Girls | 2014 | MEX - Herrera, Alexandra | MEX - Aguilar, Diana | GUA - Martinez, Ana Gabriela | BOL - Cuellar, Estefania del Carmen | BOL - Meneses, Micaela | - (No Division) | - (No Division) | - (No Division) | |
| All IRF Girls | 2013 | MEX - Gonzalez, Lucia | MEX - Aguilar, Diana | GUA - Martinez, Ana Gabriela | MEX - Flores, Ana Laura | CRC - Ortiz, Maricruz | BOL - Ona, Maria Jose | - (No Division) | - (No Division) | |
| All IRF Girls | 2012 | BOL - Vargas, Maria Jose | BOL - Mendez, Natalia | MEX - Aguilar, Diana | GUA - Martinez, Ana Gabriela | CRC - Ortiz, Maricruz | - (No Division) | - (No Division) | - (No Division) | |
| All IRF Girls | 2011 | CAN - Lambert, Frederique | MEX - Herrera, Alexandra | MEX - Aguilar, Diana | USA - Cooperrider, Jordan | DOM - Perdomo, Rodaliza | - (No Division) | - (No Division) | - (No Division) | |
| All IRF Girls | 2010 | USA - Kirch (OBrien), Aubrey | BOL - Vargas, Maria Jose | BOL - Mendez, Natalia | MEX - Aguilar, Diana | GUA - Martinez, Ana Gabriela | MEX - Aguilar, Delia | USA - Wargo, Graciana | - (No Division) | |
| All IRF Girls | 2009 | BOL - Sabja, Yazmine | USA - Kirch (OBrien), Aubrey | MEX - Gonzalez, Lucia | MEX - Aguilar, Diana | USA - Zeng, Mary | - (No Division) | - (No Division) | - (No Division) | |
| All IRF Girls | 2008 | MEX - Longoria, Paola | USA - Maddux (Key), Danielle | BOL - Vargas, Maria Jose | MEX - Herrera, Alexandra | BOL - Mendez, Natalia | GUA - Gonzalez, Ana | GUA - Gonzalez, Ana | GUA - Gonzalez, Ana | |
| All IRF Girls | 2007 | MEX - Longoria, Paola | ECU - Munoz, Maria Paz | CAN - Lambert, Frederique | MEX - Gonzalez, Ximena | BOL - Mendez, Natalia | - (No Division) | - (No Division) | - (No Division) | |
| All IRF Girls | 2006 | USA - Key, Michelle | MEX - Longoria, Paola | ECU - Sotomayor, Veronica | BOL - Vargas, Maria Jose | MEX - Gonzalez, Lucia | MEX - Aguilar, Diana | MEX - Montiel, Dariana | MEX - Montiel, Dariana | |
| All IRF Girls | 2005 | MEX - Enriquez, Nancy | MEX - Longoria, Paola | CAN - Keay (Richardson), Christine | ECU - Sotomayor, Veronica | MEX - Gonzalez, Lucia | MEX - Gascon, Karla | MEX - Gascon, Karla | USA - Manilla, Erika | |
| All IRF Girls | 2004 | MEX - Salas, Samantha | USA - Willhite, Ashley | MEX - Longoria, Paola | ECU - Sotomayor, Veronica | USA - Brenner, Elizabeth | MEX - Gonzalez, Lucia | MEX - De Luna, Kimberly | MEX - Gardea, Arlene | |
| All IRF Girls | 2003 | USA - Haynes (Fisher), Adrienne | MEX - Enriquez, Nancy | MEX - Longoria, Paola | ECU - Sotomayor, Veronica | ECU - Sotomayor, Veronica | MEX - Gonzalez, Lucia | MEX - Gonzalez, Lucia | - (No Division) | |
| All IRF Girls | 2002 | USA - Haynes (Fisher), Adrienne | USA - Haynes (Fisher), Adrienne | USA - Willhite, Ashley | MEX - Longoria, Paola | ECU - Sotomayor, Veronica | USA - Brenner, Elizabeth | MEX - Estrada, Paulina | MEX - De Luna, Kimberly | |
| All IRF Girls | 2001 | USA - Bellows (Walsh), Kristen | USA - Haynes (Fisher), Adrienne | MEX - Enriquez, Nancy | MEX - Longoria, Paola | USA - Toland, Wesley | USA - Inglesby, Kaitlin | USA - Brenner, Elizabeth | MEX - Rodriguez, Monserrat | |
| All IRF Girls | 2000 | USA - Bellows (Walsh), Kristen | USA - Winfrey, Crystal | USA - Haynes (Fisher), Adrienne | USA - Willhite, Ashley | USA - Inglesby, Shannon | USA - Grundman, Nicole | MEX - Malvaez, Yesenia | USA - Brenner, Elizabeth | |
| All IRF Girls | 1999 | USA - Crawford, Brooke | USA - Bellows (Walsh), Kristen | USA - Haynes (Fisher), Adrienne | CAN - Jacobson-Prentice, Brandi | MEX - Guzman Velgis, Eleni | MEX - Terrazas, Estefania | USA - Toland, Wesley | - (No Division) | |
| All IRF Girls | 1998 | CAN - Kerr, Lisa | CAN - Odegard, Karina | USA - Winfrey, Crystal | USA - Haynes (Fisher), Adrienne | USA - Willhite, Ashley | USA - Inglesby, Shannon | USA - Inglesby, Shannon | USA - Inglesby, Kaitlin | |
| All IRF Girls | 1997 | CAN - Kerr, Lisa | CAN - Kerr, Lisa | CAN - Odegard, Karina | USA - Deutsch, Lindsay | CAN - Jacobson-Prentice, Brandi | MEX - Guzman Velgis, Eleni | - (No Division) | MEX - Licon, Alejandra | |
| All IRF Girls | 1996 | USA - Rajsich, Rhonda | USA - Crawford, Brooke | USA - Bellows (Walsh), Kristen | USA - Leutele, Grace | USA - Haynes (Fisher), Adrienne | MEX - Moreno, Marcela | MEX - Guzman Velgis, Eleni | ||
| All IRF Girls | 1995 | CAN - Huczek (Van Hees), Christie | CAN - Dunn (MacDonald), Amanda | CAN - Kerr, Lisa | CAN - Odegard, Karina | USA - Thomas (Irons), Kimberly | MEX - Moreno, Marcela | USA - Fisher, Kelley | ||
| All IRF Girls | 1994 | DOM - Garcia, Claudine | USA - Gross, Sadie | CAN - Kerr, Lisa | CAN - Odegard, Karina | USA - Winfrey, Crystal | USA - Haynes (Fisher), Adrienne | USA - Haynes (Fisher), Adrienne | ||
| All IRF Girls | 1993 | USA - Brown (Brockbank), Tammy | USA - Feaster, Shannon | USA - Tulao, Vanessa | CAN - Kerr, Lisa | CAN - Odegard, Karina | USA - Thomas (Irons), Kimberly | USA - Thomas (Irons), Kimberly | ||
| All IRF Girls | 1992 | USA - Icenogle, Elkova | DOM - Garcia, Claudine | USA - Gross, Sadie | CAN - Wig, Riva | CAN - Odegard, Karina | USA - Law, Molly | USA - Thomas (Irons), Kimberly | ||
| All IRF Girls | 1991 | USA - Dunn, Heather | USA - Engel, Britt | USA - Feaster, Shannon | USA - Maginn, Colleen | CAN - Wig, Riva | CAN - Odegard, Karina | - (No Division) | ||
| All IRF Girls | 1990 | USA - Dunn, Heather | CAN - Holt, Rhonda | USA - Beugen, Andrea | USA - Gates, Dawn Marie | CAN - Wig, Riva | - (No Division) | USA - Feaster, Alexys | ||
| All IRF Girls | 1989 | USA - Gould (Gilman), Michelle | USA - Icenogle, Elkova | USA - Roehler, Aimee | USA - Feaster, Shannon | USA - Gates, Dawn Marie | CAN - Wig, Riva | USA - Hansen, Lynn |
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