People

• Hannes Alfvén (1908-1995) – a Swedish plasma physicist and Nobel Prize in Physics laureate
• Hugo Alfvén (1872-1960) – a Swedish composer, conductor, violinist, and painter
• Marie Triepcke Krøyer Alfvén (1867-1940), commonly known as Marie Krøyer – a Danish painter, wife of Hugo Alfvén

Other

• Alfvén wave – type of magnetohydrodynamic wave, named after Hannes Alfvén
• Alfvén (asteroid), alias (1778) Alfvén - an asteroid discovered in 1960, named after Hannes Alfvén