Vainio is a Finnish surname meaning "field". Notable people with the surname include:

• Aaro Vainio, Finnish race driver
• Jaakko Vainio, Finnish journalist and politician
• Jouni Vainio, Finnish Olympian sport shooter
• Juha Vainio, Finnish musician
• Martti Vainio, Finnish long-distance runner
• Vihtori Vainio (1890–1942), Finnish politician
• Mikko Vainio (1923–2017), Finnish politician

• The Life of Émile Zola
• The Life Party
• The Life Persuit
• The Life Pursuit
• The life pursuit
• The Life Savers Company
• The Lifestyle Channel
• The Lifestyles of The Rich And Famous
• The Life Swap
• The Life That I Have
• The lifted brow
• The Lifted Brow
• The Lifted Veil (novella)
• The Light
• The light and the dark
• The Light at the Edge of the World
• The Light at the End of the World
• The Light at the End of the World (A Flock of Seagulls album)
• The Light Bearer
• The light before we land
• The Light Brigade (episode)
• The Light (Common song)
• The Light Divides
• The Light Dragoons
• The lightening seeds