르 몽드 디플로마티크(프랑스어: Le Monde Diplomatique)는 프랑스의 일간지 르 몽드의 자매지인 국제전문 월간지이자 정치, 경제, 사회, 문화, 예술, 교육 등 전분야에 걸쳐 이슈를 다루는 매체이다. Le Monde diplomatique (nicknamed Le Diplo by its French readers) is a monthly newspaper offering left-oriented analysis and opinion on politics, culture, and current affairs. The original French edition has a circulation of about 350,000; 38 editions in 26 other languages (more 33 electronic editions) bring the total to about 2.4 million readers worldwide. First created mainly for a diplomatic audience as its name implies, it had a non-aligned, Third-worldist viewpoint throughout the Cold War. It practices nowadays advocacy journalism in taking an editorial stance based on alter-globalization. As of March 2008 the paper is headed by Serge Halimi.