99% of Lampung's population is Muslim.

The Muslim population in Lampung province, as of December 31, 2022, was recorded at 8.6 million people. This is an increase of 66,898 people compared to the previous year, which reported 8.53 million people.

According to data from the Central Statistics Agency (BPS), the proportion of the Muslim population in this province reached 99 percent of the total population recorded in 2022, which was 8.68 million people. Compared to other religions, the proportion of the Muslim population is second highest.

The population of Lampung by religion in 2022, from largest to smallest, is as follows:

* Islam: 8,598,009 people (99.02%)
* Hindu: 125,503 people (1.45%)
* Protestant: 121,757 people (1.4%)
* Catholic: 77,227 people (0.89%)
* Buddhist: 24,065 people (0.28%)
* Confucian: 132 people (0%)
* Other: 765 people (0.01%)

Other provinces in Sumatra with the largest Muslim populations, in descending order, are: North Sumatra (10,244,655 people), South Sumatra (8,508,999 people), Riau (5,870,015 people), West Sumatra (5,528,423 people), Aceh (5,356,635 people), Jambi (3,514,415 people), Bengkulu (2,017,860 people), Riau Islands (1,671,242 people), and Bangka Belitung Islands (1,344,903 people).