Jelen or Jeleń ("deer" in several Slavic languages) is a surname and toponym. The name is unrelated to the Senegambian name Jeleen.

• Alen Jelen (born 1970), Slovenian theatre and radio director, dramaturgist, actor, journalist
• Alois Jelen (1801–1857), Czech composer
• Antoni Jeleń (born 1964), Polish football player
• Ben Jelen (born 1979), Scottish-born American singer-songwriter
• Eric Jelen (born 1965), German tennis player
• Ireneusz Jeleń (born 1981), Polish football player
• Josef Jelen (born 1914), Czech boxer
• Mateusz Jeleń (born 1988), Polish football player
• Rudolf Jelen (1876–1938), Czech sports shooter
• Jelen (bumi), 15th-century West African monarch

• Jeleń (inhabited locality), places in Poland
• Jelen, Nebraska, a community in the United States

• Jelen pivo, a Serbian brand of beer
• Jelen (band), Czech music group

• All pages with titles containing Jelen
• Zafer Yelen, Turkish footballer
• Yellen
• Yellin

• Origin of the surname Yellen/Yellin, including as a Yiddish calque of Slavic Jelen; from the Dictionary of American Family Names (2022)