Sheena Shirley Easton (née Orr; born 27 April 1959) is a Scottish singer and actress. She came into the public eye in an episode of the first British musical reality television series The Big Time: Pop Singer, which recorded her attempts to gain a record deal and her eventual signing with the EMI label. Easton's first two singles, "Modern Girl" and "9 to 5" (later released as "Morning Train (Nine to Five)" in the United States), both entered the Top 10 of the UK Singles Chart simultaneously. She became one of the most successful British female recording artists of the 1980s.

A six-time Grammy Award nominee, Easton is a two-time winner, winning the award for Best New Artist in 1982 and Best Mexican-American Performance in 1985 for her duet with Mexican singer Luis Miguel on the 1984 single "Me Gustas Tal Como Eres". She has recorded 15 studio albums, released a total of 55 singles and had 20 consecutive US singles, including 15 Top 40 hits, seven Top 10's and one number-one hit on the Billboard Hot 100 between 1981 and 1991. She has received five RIAA-certified Gold albums and one Platinum album. In Canada, she scored three Gold albums and two Platinum albums. With 25 Top 40 international hit singles, Easton has sold over 40 million records worldwide.

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

Easton's other hit singles include the James Bond-theme "For Your Eyes Only", "You Could Have Been with Me", "Telefone (Long Distance Love Affair)", "Almost Over You", "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 singers, writers and producers, such as Prince, Christopher Neil, Kenny Rogers, David Foster, Luis Miguel, L.A. Reid, Babyface, Patrice Rushen and Nile Rodgers.