Lou Piniella, American baseball player and manager
Louis Victor Piniella ( usually ; born August 28, 1943) is a former professional baseball player and manager. An outfielder, he played 16 seasons in Major League Baseball (MLB) with the Baltimore Orioles, Cleveland Indians, Kansas City Royals and New York Yankees. During his playing career, he was named AL Rookie of the Year in 1969 and captured two World Series championships with the Yankees (1977, 1978).

Following his playing career, Piniella became a manager for the Yankees (1986–1988), Cincinnati Reds (1990–1992), Seattle Mariners (1993–2002), Tampa Bay Devil Rays (2003–2005), and Chicago Cubs (2007–2010). He won the 1990 World Series championship with the Reds and led the Mariners to four postseason appearances in seven years (including a record 116-win regular season in 2001). He also captured back-to-back division titles (2007–2008) during his time with the Cubs. Piniella was named Manager of the Year three times during his career (1995, 2001, 2008) and finished his managerial career ranked 14th all time on the list of managerial wins.

He was nicknamed "Sweet Lou", both for his swing as a major league hitter and, facetiously, to describe his demeanor as a player and manager.