List of Major League Baseball players (U)
# List of Major League Baseball players (U)

The following is a list of Major League Baseball players, retired or active. As of the end of the 2010 season, there have been 53 players with a last name that begins with U who have been on a major league roster at some point.

## List of Major League Baseball players

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z

## U

| Name | Debut | Final game | Position | Teams |
| - | - | - | - | - |
| Jimmy Uchrinscko | July 20, 1926 | July 27, 1926 | Pitcher | Washington Senators |
| Bob Uecker | April 13, 1962 | September 29, 1967 | Catcher | Milwaukee Braves, St. Louis Cardinals, Philadelphia Phillies, Atlanta Braves |
| Koji Uehara | April 8, 2009 | | Pitcher | Baltimore Orioles, Texas Rangers |
| Dan Uggla | April 3, 2006 | | Second baseman | Florida Marlins, Atlanta Braves |
| Luis Ugueto | April 3, 2002 | September 23, 2003 | Utility infielder | Seattle Mariners |
| Frenchy Uhalt | April 17, 1934 | July 1, 1934 | Outfielder | Chicago White Sox |
| Bob Uhl | May 8, 1938 | September 14, 1940 | Pitcher | Chicago White Sox, Detroit Tigers |
| Ted Uhlaender | September 4, 1965 | September 30, 1972 | Outfielder | Minnesota Twins, Cleveland Indians, Cincinnati Reds |
| George Uhle | April 30, 1919 | September 22, 1936 | Pitcher | Cleveland Indians, Detroit Tigers, New York Giants, New York Yankees |
| Maury Uhler | April 14, 1914 | July 23, 1914 | Outfielder | Cincinnati Reds |
| Charlie Uhlir | August 3, 1934 | September 22, 1934 | Outfielder | Chicago White Sox |
| Jerry Ujdur | August 17, 1980 | September 28, 1984 | Pitcher | Detroit Tigers, Cleveland Indians |
| Mike Ulicny | May 5, 1945 | June 22, 1945 | Catcher | Boston Braves |
| Scott Ullger | April 17, 1983 | September 30, 1983 | First baseman | Minnesota Twins |
| Sandy Ullrich | May 3, 1944 | September 16, 1945 | Pitcher | Washington Senators |
| Dutch Ulrich | April 18, 1925 | October 1, 1927 | Pitcher | Philadelphia Phillies |
| George Ulrich | May 1, 1892 | August 7, 1896 | Outfielder | Washington Senators (1891–99), Cincinnati Reds, New York Giants |
| Arnold Umbach | October 3, 1964 | July 19, 1966 | Pitcher | Milwaukee/Atlanta Braves |
| Jim Umbarger | April 8, 1975 | September 28, 1978 | Pitcher | Texas Rangers, Oakland Athletics |
| Jim Umbricht | September 26, 1959 | September 29, 1963 | Pitcher | Pittsburgh Pirates, Houston Colt .45s |
| Tom Umphlett | April 16, 1953 | September 24, 1955 | Outfielder | Boston Red Sox, Washington Senators |
| Willie Underhill | September 8, 1927 | September 27, 1928 | Pitcher | Cleveland Indians |
| Fred Underwood | July 18, 1894 | August 30, 1894 | Pitcher | Brooklyn Grooms |
| Pat Underwood | May 31, 1979 | June 21, 1983 | Pitcher | Detroit Tigers |
| Tom Underwood | August 19, 1974 | September 23, 1984 | Pitcher | Philadelphia Phillies, St. Louis Cardinals, Toronto Blue Jays, New York Yankees, Oakland Athletics, Baltimore Orioles |
| Bob Unglaub | April 15, 1904 | September 17, 1910 | First baseman | New York Highlanders, Boston Americans/Red Sox, Washington Senators |
| Tim Unroe | May 30, 1995 | September 30, 2000 | First baseman | Milwaukee Brewers, Anaheim Angels, Atlanta Braves |
| Al Unser | September 14, 1942 | September 5, 1945 | Catcher | Detroit Tigers, Cincinnati Reds |
| Del Unser | April 10, 1968 | June 6, 1982 | Outfielder | Washington Senators (1961–1971), Cleveland Indians, Philadelphia Phillies, New York Mets, Montreal Expos |
| Woody Upchurch | September 14, 1935 | May 24, 1936 | Pitcher | Philadelphia Athletics |
| Bill Upham | April 10, 1915 | June 26, 1918 | Pitcher | Brooklyn Tip-Tops, Boston Braves |
| John Upham | April 16, 1967 | September 25, 1968 | Pitcher | Chicago Cubs |
| Jerry Upp | September 2, 1909 | September 27, 1909 | Pitcher | Cleveland Naps |
| Dixie Upright | April 18, 1953 | May 10, 1953 | Pinch hitter | St. Louis Browns |
| Cecil Upshaw | October 1, 1966 | September 28, 1975 | Pitcher | Atlanta Braves, Houston Astros, Cleveland Indians, New York Yankees, Chicago White Sox |
| Willie Upshaw | April 9, 1978 | September 28, 1988 | First baseman | Toronto Blue Jays, Cleveland Indians |
| B. J. Upton | August 2, 2004 | | Outfielder | Tampa Bay Devil Rays/Rays |
| Bill Upton | April 13, 1954 | May 3, 1954 | Pitcher | Philadelphia Athletics |
| Justin Upton | August 2, 2007 | | Outfielder | Arizona Diamondbacks |
| Tom Upton | April 19, 1950 | April 30, 1952 | Shortstop | St. Louis Browns, Washington Senators |
| Jack Urban | June 3, 1957 | August 6, 1959 | Pitcher | Kansas City Athletics, St. Louis Cardinals |
| Luke Urban | July 19, 1927 | June 21, 1928 | Catcher | Boston Braves |
| Tom Urbani | April 21, 1993 | August 4, 1996 | Pitcher | St. Louis Cardinals, Detroit Tigers |
| Billy Urbanski | July 4, 1931 | April 23, 1937 | Shortstop | Boston Braves/Bees |
| Ugueth Urbina | May 9, 1995 | October 2, 2005 | Pitcher | Montreal Expos, Boston Red Sox, Texas Rangers, Florida Marlins, Detroit Tigers, Philadelphia Phillies |
| Lino Urdaneta | September 9, 2004 | May 7, 2007 | Pitcher | Detroit Tigers, New York Mets |
| José Uribe | September 13, 1984 | October 3, 1993 | Shortstop | St. Louis Cardinals, San Francisco Giants, Houston Astros |
| Juan Uribe | April 8, 2001 | | Shortstop | Colorado Rockies, Chicago White Sox, San Francisco Giants, Los Angeles Dodgers |
| John Urrea | April 10, 1977 | October 4, 1981 | Pitcher | St. Louis Cardinals, San Diego Padres |
| Lon Ury | September 9, 1903 | September 12, 1903 | First baseman | St. Louis Cardinals |
| Bob Usher | April 16, 1946 | September 19, 1957 | Outfielder | Cincinnati Reds, Chicago Cubs, Cleveland Indians, Washington Senators |
| Dutch Ussat | September 13, 1925 | October 2, 1927 | Third baseman | Cleveland Indians |
| Chase Utley | April 4, 2003 | | Second baseman | Philadelphia Phillies |
