2011 in sports in Maryland

The 2011 United States Open Championship was the 111th U.S. Open, played June 16–19 at Congressional Country Club in Bethesda, Maryland, a suburb northwest of Washington, D.C. Rory McIlroy won his first major title, eight strokes ahead of Jason Day. He set eleven U.S. Open records on the weekend, including the lowest total 72-hole score (268) and the lowest total under par (−16). McIlroy and Robert Garrigus became the fifth and sixth in U.S. Open history to score under par in all four rounds.

The 2011 Washington Redskins season was the 79th season for the team in the National Football League (NFL) and their 74th representing the District of Columbia (Washington, D.C.). Their home games were played at FedEx Field in Landover, Maryland for the 15th consecutive year. Washington played in the Eastern division of the National Football Conference (NFC). The Redskins failed to improve on their 2010 record of 6–10, but did manage to defeat the New York Giants, the eventual Super Bowl champions, twice in the regular season, becoming only the sixth team to do so (the 1969 Oakland Raiders, 1983 Seattle Seahawks, 1995 Washington Redskins, 2002 New Orleans Saints, and 2007 Dallas Cowboys, also against the Giants, being the others).

The 2011 Baltimore Ravens season was the team's 16th in the National Football League and city of Baltimore, and the 14th to host home games at M&T Bank Stadium. 2011 marked one of the most successful seasons in Baltimore Ravens franchise history. It would be the first time since 2006 that the Ravens would sweep Pittsburgh in the AFC North division. The Ravens completed the season with a 12–4 record, matching their record from 2010, and winning the AFC North division title for the third time in franchise history. By earning a playoff berth in 2011, the Ravens set a franchise record by going to the postseason for four consecutive seasons.

The 2011 Preakness Stakes was the 136th running of the Preakness Stakes and was won by Shackleford. The race took place on May 21, 2011, and was televised in the United States on the NBC television network. The post time was 6:18 p.m. EDT (10:18 p.m. UTC). The race was the 12th race on a card of 13 races. The Maryland Jockey Club reported total attendance of 118,356, this is recorded as second highest on the list of American thoroughbred racing top attended events for North America in 2011.

The 2011–12 Navy Midshipmen men's basketball team represented the United States Naval Academy during the 2011–12 NCAA Division I men's basketball season. The Midshipmen, led by first year head coach Ed DeChellis, played their home games at Alumni Hall and were members of the Patriot League.

The 2011 MLS SuperDraft was the twelfth annual SuperDraft presented by Major League Soccer. It was held on January 13, 2011 in Baltimore, Maryland, during the 2011 NSCAA Convention at the Baltimore Convention Center. The 2011 SuperDraft consisted of three rounds with eighteen selections each, for a total of 54 players selected during the draft. The draft preceded the 2011 MLS season.

The Baltimore Orioles' 2011 season was the 111th season in franchise history, and the 58th in Baltimore. It also marked the last year of a streak of fourteen consecutive losing seasons dating back to 1998.

The 2011 Patriot League baseball tournament was held on consecutive weekends with the semifinals held May 14–15 and the finals May 23–24, 2011 to determine the champion of the Patriot League for baseball for the 2011 NCAA Division I baseball season. The event matched the top four finishers of the six team league in a double-elimination tournament. Top seeded Navy won their fifth championship and claimed the Patriot's automatic bid to the 2011 NCAA Division I baseball tournament. Ben Nelson of Navy was named Tournament Most Valuable Player.

The 2011–12 UMBC Retrievers men's basketball team represented the University of Maryland, Baltimore County in the 2011–12 NCAA Division I men's basketball season. The team competed in the America East Conference (AEC) and was led by eighth-year head coach Randy Monroe.

The 2010–11 UMBC Retrievers men's basketball team represented University of Maryland, Baltimore County in the 2010–11 NCAA Division I men's basketball season. The team played in the America East Conference (AEC) and was led by head coach Randy Monroe, in his seventh year. The Retrievers finished with a record of 5–25, 4–12 in the America East. The Retrievers were eliminated in the first round of the America East tournament by Binghamton, 91–65.