Alen may refer to:

• Alen (unit of length), or Aln, a traditional Scandinavian unit of distance
• Alen (given name), a Bosniak and Croatian given name

• Dean Nalder
• Deanna Lockett
• Deanna Lynne
• Deanna Manfredi
• Deanna M. Church
• Dean (name)
• Deanna Merryman
• Deanna Monroe
• Deanna Mustard
• De Ann, Arkansas
• Deann, Arkansas
• DeAnn, Arkansas
• DeAnna Robbins
• Deanna Rose Children's Farmstead
• Deanna Smith
• De Ann Cemetery Historic Section
• Deanne Butler
• Deanne Crothers
• Deanne Fitzmaurice
• Deanne Meek
• DeAnne Shirley Julius
• DeAnne Smith
• Dean Nesmith
• Deanne Soza
• Dean Notting