West Sumatra is a province of Indonesia. On the west coast of the island of Sumatra, the province has an area of 42,012.89 km², and it had a population of 4,846,909 at the 2010 Census and 5,534,472 at the 2020 Census. The province includes the Mentawai Islands off the coast and borders the provinces of North Sumatra to the north, Riau and Jambi to the east, and Bengkulu to the southeast. West Sumatra is sub-divided into twelve regencies and seven cities. It has relatively more cities than other provinces outside of Java, although several of them are relatively low in population compared with cities elsewhere in Indonesia. Padang is the province's capital and largest city.
West Sumatra is home to the Minangkabau people, although the traditional Minangkabau region is actually wider than the province's boundaries, covering up to the southern region of North Sumatra, the western region of Riau, the western region of Jambi, the northern region of Bengkulu, and Negeri Sembilan in Malaysia. Another native ethnic group is Mentawai people, who inhabit the western islands of the same name. Islam is a predominant religion in the province with about 97.4% of the total population.