Sebastián Martínez may refer to:
Sebastián Martínez (actor) (born 1981), Colombian actor Sebastián Martínez (footballer, born 1977), Austrian former footballer Sebastián Martínez (footballer, born 1993), Chilean footballer Sebastián Martínez (footballer, born 1983), Uruguayan footballer Sebastián Martínez (footballer, born 2001), Mexican footballer Sebastián Martínez (footballer, born 2003), Mexican footballer
See also Daniel Sebastián Martínez (born 1981), Uruguayan footballer