Somasundaram or Somasundaran (Tamil: சோமசுந்தரம், romanized: Cōmacuntaram) is a male given name in South India and Sri Lanka. Due to the South Indian tradition of using patronymic surnames it may also be a surname for males and females.

• Kumaravel Somasundaram (born 1962), Indian cancer biologist, professor in the Indian Institute of Science
• Madurai S. Somasundaram (1919–1989), Carnatic music vocalist
• Mi. Pa. Somasundaram (1921–1999), Tamil journalist, poet, writer and musicologist
• S. D. Somasundaram (1930–2001), political leader and administrator, cabinet minister of the Tamil Nadu state
• V. Somasundaram, Indian politician, member of the Tamil Nadu Legislative Assembly

• Guru Somasundaram, Indian actor who works in the Tamil and Malayalam film industries
• Ponisseril Somasundaran (born 1939), American mineral engineer
• Pradip Somasundaran (born 1967), Indian playback singer
• Rajan Somasundaram, composer, drummer, violinist and music producer based in Raleigh
• Somasundaram Nadesan, QC (1904–1986), Sri Lankan Tamil lawyer, civil rights activist, member of the Senate of Ceylon
• Somasundaram Senathirajah (1942–2025), Sri Lankan politician, Member of Parliament

• 31600 Somasundaram, minor planet
• All pages with titles containing Somasundaram
• All pages with titles containing Somasundaran