Sheena Shirley Easton (née Orr; born 27 April 1959) is a Scottish singer, songwriter and actress with dual British-American nationality. Easton first came into the public eye as the focus of an episode in the first British musical reality television programme The Big Time: Pop Singer, which recorded her attempts to gain a record contract and her eventual signing with EMI Records.

Easton's first two singles, "Modern Girl" and "Morning Train (Nine to Five)", both entered the UK Top Ten, and she was the first UK female artist to appear twice in the same Top Ten since Ruby Murray. In 1981, "Morning Train (Nine to Five)" topped the US Hot 100, making her the third UK female solo artist to achieve this, following Petula Clark and Lulu, and she became one of the most successful British female performers of the 1980s.

A six-time Grammy nominee in the U.S., Easton is a two-time Grammy Award winner, winning Best New Artist in 1981 and Best Mexican-American Performance in 1985, for her duet with Luis Miguel on the song "Me Gustas Tal Como Eres". She has received five U.S. Gold albums and one U.S. Platinum album. She has recorded 16 studio albums, released 45 singles total worldwide, and had 20 consecutive US singles, including 15 U.S. Top 40 singles, seven U.S. top tens and one U.S. No.1 on the Billboard Hot 100 between 1981 and 1991. She also had 25 top 40 hits in international territories around the world. In Canada, Easton scored three gold and two platinum albums. She has sold over 20 million albums and singles worldwide.

Easton became the first and only artist in history to have a Top 5 hit on five different Billboard charts consecutively, with "Morning Train (Nine to Five)" (both Pop and Adult Contemporary), "We've Got Tonight" with Kenny Rogers (Country) and "Sugar Walls" (both R&B and Dance).

Easton's other hits include the James Bond theme "For Your Eyes Only", "Strut", "U Got the Look" and "The Arms of Orion" with Prince, "The Lover in Me" and "What Comes Naturally". She has worked with prominent vocalists and producers, such as Prince, Christopher Neil, Kenny Rogers, David Foster, Luis Miguel, L.A. Reid & Babyface, Patrice Rushen and Nile Rodgers.