A floor trader is a member of a stock or commodities exchange who trades on the floor of that exchange for his or her own account. The floor trader must abide by trading rules similar to those of the exchange specialists who trade on behalf of others. The term should not be confused with floor broker. Floor traders are occasionally referred to as registered competitive traders, individual liquidity providers or locals.

Brian Welsh (born 23 February 1969) is a Scottish football player and coach. He played for Dundee United and Hibernian. Welsh managed Cowdenbeath for two seasons and is currently Head of Youth Development at Livingston.

Welsh began his career with Dundee United, making his debut in the 1986-87 season. During that season, in 1986, Welsh was part of the Scotland team who reached the semi-finals of the UEFA European Under-19 Football Championship, losing 1-0 to Italy. The following year, he reached the quarter-finals of the World Youth Championship, losing on penalties to West Germany. Welsh became a regular in the United side in 1993–94 and helped the club win the Scottish Cup for the first time, particularly by scoring in the semi-final against Aberdeen. He then experienced relegation in 1995 and subsequent promotion with the club. Welsh scored a crucial goal in a promotion play-off match against Partick Thistle in 1996.

In August 1996 Welsh left Tannadice to join Hibernian in a £200,000 deal. With the Edinburgh club, he again suffered relegation but helped win promotion back to the top division in 1999. Welsh began legal proceedings against Malcolm Morrison, who was employed as Hibernian club doctor during his time with the club, in 2008. Welsh claimed that an injection administered by Morrison had ruined his career, and an out-of-court settlement for a "substantial sum" was reached.