Mario Castillo

{{short description|Salvadoran footballer (born 1951)}}

{{Use dmy dates|date=September 2024}}

{{family name hatnote|Castillo|Díaz|lang=Spanish}}

{{Infobox football biography

| name = Mario Castillo

| image =

| fullname = Mario Alfonso Castillo Díaz

| birth_date = {{Birth date and age|1951|10|31|df=yes}}

| birth_place = San Miguel, El Salvador

| height = {{height|m=1.74|precision=0}}

| currentclub =

| clubnumber =

| position = Defender

| youthyears1 = 1966–1967

| youthyears2 = 1970–1972

| youthclubs1 = El Salvador

| youthclubs2 = Dragón

| years1 = 1972–1977

| years2 = 1978–1983

| years3 = 1984–1985

| years4 = 1986–1987

| clubs1 = Águila

| clubs2 = Santiagueño

| clubs3 = Alianza

| clubs4 = Águila

| caps1 =

| goals1 =

| nationalyears1 = 1979–1982

| nationalteam1 = El Salvador

| nationalcaps1 =

| nationalgoals1 =

| pcupdate =

| ntupdate =

}}

{{family name hatnote|Castillo|Díaz|lang=Spanish}}

Mario Alfonso Castillo Díaz (born 30 October 1951 in San Miguel, El Salvador) is a retired football player.{{Cite web|url=https://www.laprensagrafica.com/deportes/Macora-Castillo-Hoy-los-jugadores-del-Aguila-se-distraen-con-cualquier-cosa-20171206-0045.html|title="Macora" Castillo: "Hoy los jugadores del Águila se distraen con cualquier cosa"}}