Rain () is a municipality in the district of Hochdorf in the canton of Lucerne in Switzerland.
Geography
thumb|Aerial view (1952)
Rain has an area of . Of this area, 74.9% is used for agricultural purposes, while 16.8% is forested. The rest of the land, (8.3%) is settled.
In Rain about 78.5% of the population (between age 25–64) have completed either non-mandatory upper secondary education or additional higher education (either university or a Fachhochschule).
there are 637 households, of which 141 households (or about 22.1%) contain only a single individual. 110 or about 17.3% are large households, with at least five members. 52.2% of the population of the municipality were employed in some capacity. At the same time, females made up 40.9% of the workforce.
the religious membership of Rain was; 1,580 (86.3%) were Roman Catholic, and 126 (6.9%) were Protestant, with an additional 1 (0.05%) that were of some other Christian faith. There are 23 individuals (1.26% of the population) who are Muslim. Of the rest; there were 9 (0.49%) individuals who belong to another religion, 57 (3.11%) who do not belong to any organized religion, 35 (1.91%) who did not answer the question.