The Strait of Malacca lies between

The Strait of Malacca is a critical maritime waterway in Southeast Asia that connects the Indian Ocean (via the Andaman Sea) to the South China Sea and the Pacific Ocean [t2, t3]. Geographically, it is a narrow channel stretching approximately 930 km, situated between the Malay Peninsula of Malaysia and the Indonesian island of Sumatra [t3, t4, t8]. It serves as one of the world's most vital shipping choke points, facilitating trade between the Middle East, India, and East Asian economies like China and Japan [c2, t1, t6]. Major ports along its coast include Port Klang in Malaysia and Belawan in Indonesia [t3]. While it is near Singapore and Thailand, the primary landmasses defining its boundaries are Malaysia to the northeast and Indonesia to the southwest [t3, t4].

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 16: India–Political Aspects > INDIA AND THE GEO-POLITICS OF THE INDIAN OCEAN > p. 64
2. [2] https://www.britannica.com/place/Strait-of-Malacca