Alen is a male given name of European origin. In Old Gaelic, the name means "little rock." Other sources suggest it means "handsome" or "harmony."

In the Balkans, this particular spelling of the name is predominantly found among the peoples of the former Yugoslav nations, specifically among Bosniaks and Croats. This region also has a female equivalent: Alena.

• Alen Avdić (born 1977), Bosnian football player
• Alen Bajkusa (born 1971), Bosnia and Herzegovinian soccer player
• Alen Bokšić (born 1970), Croatian former football striker
• Alen Hadzic (born 1991), American former fencer
• Alen Halilović (born 1996), Croatian football player
• Alen Islamović (born 1957), Bosniak singer
• Alen Lončar (born 1974), Croatian freestyle swimmer
• Alen Marcina (born 1979), Canadian soccer player
• Alen Mujanovič (born 1976), Slovenian footballer
• Alen Muratović (born 1979), Montenegrin handball player
• Alen Orman (born 1978), Bosnian-Austrian footballer
• Alen Peternac (born 1972), Croatian football striker
• Alen Pol Kobryn (1949–2023), American poet and novelist
• Alen Simonyan (born 1980), Armenian politician
• Alen Škoro (born 1981), Bosnian footballer
• Alen Smailagić (born 2000), Serbian basketball player
• Alen Stajcic (born 1973), Australian former football player
• Alen Stevanović (born 1991) Serbian footballer

• Alen (disambiguation)
• Alén (name), a given name and surname
• Alen Baronets
• Van Alen (disambiguation)
• Alan (given name)
• Allan (given name)
• Allen (given name)