James Gorman Thomas III (born December 12, 1950) is an American former professional baseball player. He played Major League Baseball (MLB) as a center fielder and right-handed hitter. Thomas played in the American League (AL) with the Milwaukee Brewers (1973–76, 1978–83, 1986), Cleveland Indians (1983) and Seattle Mariners (1984–86).

With the Brewers, Thomas was one of the franchise's most popular players. He was a leading home run hitter in the late 1970s and early 1980s, though he hit for a low batting average and frequently struck out. Thomas had good fielding skills and his throwing arm was strong until shoulder surgery in 1984, after which he became a designated hitter until his retirement in 1986.

Thomas was born in Charleston, South Carolina. His father, Gorman Sr, was a postal worker and a former minor league pitcher. Thomas was raised in nearby James Island. His family moved to Columbia, South Carolina where he attended Cardinal Newman High School through his junior year, playing on a state championship basketball team in 1968. He attended James Island High School his senior year. In high school, Thomas earned 14 letters in four sports - baseball, football, basketball and track. He was selected in the first round (21st overall) of the 1969 Major League Baseball draft by the Seattle Pilots, becoming the first-ever draft pick in the history of the team.

In 1971, Thomas played Class A baseball in the Milwaukee system with the Danville Warriors that year. Thomas led the Midwest League in both home runs (31) and strikeouts (170). The next year with the Class AA San Antonio Brewers, Thomas led the Texas League in the same two categories, registering 26 home runs and 171 strikeouts in 135 games.

Thomas spent parts of 1973 and 1974 in the major leagues with the Brewers, but he mostly played Class AAA baseball during those seasons. With the Sacramento Solons of the Pacific Coast League in 1974, Thomas finished second in the league in home runs (51), third in RBI (122), fourth in walks (93), third in runs scored (117) and first in strikeouts (175). He spent most of the next two years on the bench with the Brewers, but he enjoyed being teammates with Hank Aaron during Aaron's last two MLB seasons.

Thomas played in Class AAA with the Spokane Indians for the entire 1977 season, batting .322 with 36 home runs and 114 RBI in 143 games. After the season, Thomas was traded to the Texas Rangers as the player to be named later in an earlier trade for Ed Kirkpatrick. Rangers executive Dan O'Brien Sr. explained the move as a temporary "friendship deal". Brewers general manager Harry Dalton needed to open up a roster spot over the winter, and he asked O'Brien to hold Thomas on the Texas roster for a few months. In February 1978, O'Brien sold Thomas back to Milwaukee before he appeared in any games with the Rangers.

Becoming an everyday center fielder for the Brewers in 1978, Thomas batted .246 with 32 home runs and 86 RBI in 137 games. In 1979, Thomas enjoyed his best MLB season, compiling career high numbers in home runs (45, first in the AL), RBI (123), runs scored (97), hits (136), doubles (29), walks (98), on-base percentage (.356), total bases (300), slugging percentage (.539) and OPS (.895). After the season, he finished seventh in MVP Award voting. Thomas was affectionately known as "Stormin' Gorman."

In 1980, Thomas had another productive season, batting .239 with 38 home runs and 105 RBI while playing in all 162 games. Gorman followed that up by finishing second in the AL in home runs with 21 and being named to the AL All-Star Team in 1981. He finished eighth in MVP Award voting that year. In 1982, Thomas hit .245 with an AL-high 39 home runs (tying with Reggie Jackson for the league lead), and he recorded 112 RBI to help the Brewers win the American League East. The Brewers went on to win the ALCS and face the Cardinals in the World Series, where they lost to the Cardinals in seven games, with Thomas striking out against Bruce Sutter to end the Series.