| Julio César Armentia | |
| Birth Date: | August 2, 1974 |
| Birth Place: | San Cayetano, Buenos Aires |
| Height: | 1.77 m |
| Position: | Goalkeeper |
| Youthclubs1: | Independiente San Cayetano |
| Youthyears2: | 1990–1991 |
| Youthclubs2: | Necochea (partido team) |
| Years1: | 1989–1991 |
| Clubs1: | Independiente San Cayetano |
| Years2: | 1992–1994 |
| Clubs2: | Jorge Newbery Lobería |
| Years3: | 1994–1995 |
| Clubs3: | Sarmiento |
| Years4: | 1995–1996 |
| Clubs4: | Cúcuta Deportivo |
| Years5: | 1997 |
| Clubs5: | Ñublense |
| Years6: | 1998 |
| Clubs6: | Cobreloa |
| Caps6: | 0 |
| Goals6: | 0 |
| Years7: | 1998–2000 |
| Clubs7: | O'Higgins |
| Caps7: | 63 |
| Goals7: | 0 |
| Years8: | 2001 |
| Clubs8: | Universidad de Concepción |
| Years9: | 2001 |
| Clubs9: | Atlante |
| Caps9: | 0 |
| Goals9: | 0 |
| Years10: | 2002 |
| Clubs10: | Acapulco |
| Caps10: | 17 |
| Goals10: | 0 |
| Years11: | 2002–2003 |
| Clubs11: | San José |
| Caps11: | 22 |
| Goals11: | 0 |
| Years12: | 2003–2004 |
| Clubs12: | Cipolletti |
| Caps12: | 1 |
| Goals12: | 0 |
| Years13: | 2005 |
| Clubs13: | Alumni Villa María |
| Years14: | 2005 |
| Clubs14: | Unión Central Villa María |
| Years15: | 2005 |
| Clubs15: | Jorge Newbery Lobería |
| Years16: | 2006 |
| Clubs16: | Villa del Parque Necochea |
| Years17: | 2006 |
| Clubs17: | Independiente Lobería |
| Years18: | 2007–2011 |
| Clubs18: | Rivadavia Necochea |
| Years19: | 2012 |
| Clubs19: | Independiente Lobería |
| Manageryears1: | 2006–2013 |
| Managerclubs1: | CAI Lobería (youth) |
| Managerclubs2: | San Manuel |
Julio César Armentia (born August 2, 1974, in San Cayetano (Buenos Aires), Argentina) is a former Argentine footballer who last played for Rivadavia de Necochea in the regionalised fifth level of the Argentine football league system.
In his homeland, Armentía played at minor categories for clubs such as Jorge Newbery from Lobería, Sarmiento, Alumni de Villa María, Villa del Parque from Necochea, among others.[1]
In Colombia, he played for Cúcuta Deportivo, winning the 1995–96 Primera B.[2]
In Chile, he played for Ñublense, Cobreloa, O'Higgins[3] and Universidad de Concepción in both the Primera División and the Primera B.[4] As a member of O'Higgins, he got promotion to the 1999 Primera División after being the runner-up in the 1998 Primera B alongside players such as Darío Gálvez, Alejandro Tobar, Mario Núñez, Iván Sepúlveda, among others.[5] [6]
In Mexico, he was a member of Atlante in the Liga MX and Acapulco in the Ascenso MX.[7] [8]
In Bolivia, he played for San José in the top division.[9]
He has worked as a fitness and goalkeeping coach. As a football coach, he has led Club Atlético San Manuel.[10]