The Bustamante Code (Spanish: Código de Derecho Internacional Privado) is a treaty intended to establish common rules for private international law in the Americas.

[1] The common ideas of the treaty were developed by Antonio Sánchez de Bustamante y Sirven and solidified during the Sixth Pan-American Conference, held in Cuba in 1928, with the Treaty of Havana being attached as an annex to the Bustamante Code.

The United States withdrew in the middle of negotiations.

Argentina, Uruguay, and Paraguay decided to abide by the rules of the Treaties of Montevideo with regard to private international law.

The previously-mentioned reservations cover many of the states' discretion on the use of the code in cases that contradicted the countries' domestic legislation and so its actual purposes are distorted.