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Johnny Galecki

Actor and producer

Born 1975

Johnny Galecki is an American actor and producer best known as Leonard Hofstadter in The Big Bang Theory and David Healy in Roseanne and The Conners. In 2026 he announced his return to acting in the Chicago production of Kowalski after a seven-year break.

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Connected people

ConnectionJim ParsonsThe Big Bang Theory co-star as Sheldon Cooper.

ConnectionKaley CuocoThe Big Bang Theory co-star as Penny.

ConnectionSara GilbertLongtime Roseanne and The Conners scene partner.

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