Phiippe-André Schild (1 August 1910 - 13 July 1981) was a Swiss linguist known for his work with international auxiliary languages, especially Interlingua.

After coming to the conclusion that Esperanto lacked naturalism [fr], he left the movement to join Edgar de Wahl's Occidental; he supported it until 1947, when he proposed his own, again more naturalistic, language.

This project, Neolatino, attempted to combine the internationality of Romance roots, while maintaining a grammar that was as regular as possible.

However, upon realising that his project had little chance of success, he aligned himself with the Interlingua of the International Auxiliary Language Association.

Schild thus became an important figure in the international language movement – in 1954, he founded the Union Mundial pro Interlingua with French unionist Jean Thersant and British educationalist Donald Morewood; he was its first general secretary from 1955 to 1958.