The world's most populous island is Java, in Indonesia, which had a population of 136 million in 2010, all living in an area of 127,569 km² (49,254 miles²).
Please note: Comments below may relate to previous holders of this record.

Who: Java
What: Highest population, island
Where: Indonesia
When: 01 Jan 2010
The world's most populous island is Java, in Indonesia, which had a population of 136 million in 2010, all living in an area of 127,569 km² (49,254 miles²).
Please note: Comments below may relate to previous holders of this record.