Religion is one of the faultlines between indigenous Fijians and Indo-Fijians, with the former overwhelmingly Christian (99.2 % at the 1996 census), and the latter mostly Hindu (76.7 %) or Muslim (15.9 %).

The largest Christian denomination is the Methodist Church. With 36.2 % of the total population (including almost two-thirds of ethnic Fijians), its share of the population is higher in Fiji than in any other nation. Roman Catholics (8.9 %), the Assemblies of God (4 %), and Seventh-day Adventists (2.9 %) are also significant. These and other denominations also have small numbers of Indo-Fijian members; Christians of all kinds comprise 6.1 % of the Indo-Fijian population.

Hindus belong mostly to the Sanatan sect (74.3 % of all Hindus) or else are unspecified (22 %). The small Arya Samaj sect claims the membership of some 3.7 % of all Hindus in Fiji. Muslims are mostly Sunni (59.7 %) or unspecified (36.7 %), with an Ahmadiya minority (3.6 %) regarded as heretical by more orthodox Muslims.

The Sikh religion comprises 0.9 % of the Indo-Fijian population, or 0.4 % of the national population in Fiji. Their ancestors came from the Punjab region of India