The WTA Argentine Open is a WTA professional tennis tournament originally founded as a combined men's and women's tournament called the Argentina International Championships.

It was initially played from 1928 to 1987 and returned in 2021 as a WTA 125-level tournament on the WTA Tour calendar.

It was the first professional women's tennis event in Argentina since 1987.

[1] It is held at the Buenos Aires Lawn Tennis Club in November and played on outdoor clay courts.

This event is not to be confused with the earlier Argentine Championship (1918-1997), which was the open national championships of Argentina held at the Tennis Club Argentino (founded 1913) also in Buenos Aires.