Behind Real Madrid (34) and Al-Ahly (26),[5] Boca Juniors is, joint with Barcelona, the third most successful club in the world in terms of number of international titles (22).

Since 1963, Boca has regularly competed in CONMEBOL/FIFA competitions, the club registers 78 participations, winning 18 titles, they are listed in order of appearance.

In South America, matches between clubs from different countries date back to the beginning of the 20th century, with the Rio de la Plata football championships.

Boca Juniors also participated in the Copa Escobar-Gerona (created when Conmebol already existed), winning two titles.

Conmebol has mentioned those competitions as "the first official and international matches between clubs in South America".

[24] The South American Football Confederation (CONMEBOL) has organized different competitions at club level throughout history.

Due to this, the Argentine Soccer Association (AFA) has developed different classification methods for Conmebol tournaments.

The FIFA competitions are the Intercontinental Cup/FIFA Club World Cup, to which can only qualify by virtue of winning the Copa Libertadores.

The Copa Aldao was an AFA/AUF club competition contested annually, albeit irregularly, between the league champions of Argentina and Uruguay.

The Tie Cup was a football tournament played between representatives of the Argentina and Uruguay Associations.

The Copa de Honor Cousenier was an international football club competition which was played 13 times between representatives of the Argentina and Uruguay associations between 1905 and 1920.

It was similar to Tie Cup but the final games were played at Montevideo instead of Buenos Aires.

The trophy was donated by Mr. Ramiro Jouan and named after Adrián Escobar and Héctor Gerona, presidents of the Argentine and Uruguayan associations respectively.

The Copa Libertadores is the highest level of competition in South American club football and has had several different formats over its lifetime.

The Recopa Sudamericana is an annual international club football competition organized by CONMEBOL since 1988.

The competition has been disputed with either a presently-used two-legged series or a single match-up at a neutral venue.

Boca only played in the 1993 edition, as 1992 Copa Master de Supercopa champion, and won the title, being the only club from Argentina to win the competition.

The Copa Mercosur was a football competition played from 1998 to 2001 by the traditional top clubs from Brazil, Argentina, Uruguay, Paraguay, and Chile.

Boca was one of the five teams to win 3 editions, with Milan, Peñarol, Real Madrid and Nacional.

Then on 2025 the tournament expanded to 32 teams and Boca qualified by being int the top two of a club ranking of the four-year period.