Alain may refer to:
- Alain (name), both a surname and common given name
- 1969 Alain (1935 CG), a Main-belt Asteroid discovered in 1935
- Alain, Iran, a village in Tehran Province, Iran
- Al Ain International Airport in the United Arab Emirates
- Alain Afflelou, French retail chain specializing in optical services and sales of the Alain Afflelou brand of eyewear
- Alain (crab), Pinnotheridae genus
- Alain Van Kerckhoven Editeur, classical music publishing company based in Brussels, Belgium
- Émile Chartier (1868–1951), French philosopher and antimilitarist commonly known as Alain
- Prix Alain-Grandbois or Alain Grandbois Prize is awarded each year to an author for a book of poetry
- Rosa 'Alain', popular red floribunda rose variety
- Val-Alain, Quebec, village of 950 people in Quebec, Canada