Siena College is a private Franciscan college in Loudonville, Albany County, New York. Siena was founded by the Order of Friars Minor in 1937. The college was named after Bernardino of Siena, a 15th-century Italian Franciscan friar and preacher. St. Bernardine of Siena Friary is located on campus. The college has 3,000 full-time students and offers undergraduate degrees in business, liberal arts, and sciences.

In the late 1930s, Thomas Plassmann, president of St. Bonaventure University in Western New York, sent seven Franciscan friars to New York's Capital Region to found another college.

A Siena College Grotto along with a new bookstore opened in Fall 2014. A new rugby pitch was opened in Fall 2016. In 2020, the college was listed as a census-designated place (Siena College CDP)

Siena College students attend three schools within the college:

• School of Business: All programs in the school are accredited by AACSB International.
• School of Liberal Arts
• School of Science

Within the three schools, Siena offers 43 majors, over 80 minors, certificates, concentrations, and 12 graduate programs.

Siena offers 21 NCAA Division I sports, all of which participate in the Metro Atlantic Athletic Conference (MAAC).

The college generally only competed against local schools in athletics until being elevated to the Division I level in 1976. At this time, Siena became a member of the ECAC, and later the North Atlantic Conference, a forerunner to the present day America East Conference. In 1990, the college moved to the MAAC where it has remained since. Siena has not always been known by its present moniker. Athletic teams were first known as the Golden Hurricanes and later as the Indians. In March 1989, the school adopted its current nickname, the Saints.

Many of Siena's athletic teams have experienced success at the Division I level. The college's most well known squad is the men's basketball team. The Saints have appeared in six NCAA tournaments, advancing to the Round of 32 in 1989, 2008 and 2009. Siena has also played in the postseason NIT five times, capturing third place in 1994. In 2014, Siena competed in their first College Basketball Invitational tournament and won the championship defeating Stony Brook, Penn State, Illinois State and Fresno State two games to one in the best-of-three championship series. The women's basketball teams has also had a recent run of success, including a trip to the NCAA tournament in 2001, and appearances in the 1999, 2002 and 2003 WNIT. They finished second in the 2015 WBI.

Another team with recent high achievement is men's baseball. The Saints advanced to the 1999 NCAA Division I baseball tournament and in 2005 saw pitcher John Lannan drafted by the Washington Nationals. Lannan has since become a regular starter in Washington's rotation. They also participated in the 2014 NCAA Division I baseball tournament, after winning the MAAC Championship over Canisius.

Finally, the men's lacrosse team has also improved significantly in recent years. The Saints qualified for their first MAAC tournament in 2007 and their first NCAA tournament in 2009. That season, the Saints secured an automatic berth in the tournament after winning their first MAAC championship during a ten-game winning streak.

Siena College Research Institute, an affiliate of Siena College, conducts expert and public opinion polls, focusing on New York State and the United States, on issues of public policy interest.

Siena has various housing options, including traditional residence halls, private rooms, and townhouse units, across eight residential communities. Housing assignments for Siena students who live on campus are based on class year. Additionally, some students opt for off-campus housing at the College Suites or commute from nearby areas.

Approximately 90 student clubs and organizations range from academic and professional groups to cultural and recreational clubs.

Student body composition as of May 2, 2022

Race and ethnicity	Total
White	76%	76
Hispanic	9%	9
Black	4%	4
Asian	4%	4
Other	4%	4
Foreign national	3%	3
Economic diversity
Low-income	24%	24
Affluent	76%	76

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Siena College has approximately 28,000 living alumni worldwide, including former college president Kevin J. Mullen. In the fields of journalism and literature, notable Siena graduates include William J. Kennedy, 1984 Pulitzer Prize for Fiction winner; Erich Hartmann, international award-winning photojournalist and former president of Magnum Photos; David Hepp, award-winning journalist and creator of Inside Albany and Ed Henry, senior White House correspondent for Fox News. In the fields of law and government, notable Siena graduates include Francis Bergan, former presiding justice of the New York Court of Appeals; Michael Botticelli, director of the Office of National Drug Control Policy; Constantine George Cholakis, former judge of the United States District Court for the Northern District of New York; George Deukmejian, 35th governor of California; former United States representatives from New York Jack Quinn and Gerald B. H. Solomon; and Henry F. Zwack, justice of the New York Supreme Court, Third Judicial District.

• 
  Erich Hartmann,
  President,
  Magnum Photos
• 
  George Deukmejian,
  35th Governor of California
• 
  Jack Quinn,
  US Representative,
  New York
• 
  Gerald B. H. Solomon,
  US Representative,
  New York

• Mark A. Heckler, professor of fine arts

• Official website
• Siena Saints Athletics website