Michael Franklin Quitugua San Nicolas (born January 30, 1981) is a Guamanian Democratic Party politician, who served as the delegate to the U.S. House of Representatives for Guam's at-large congressional district from 2019 to 2023.

[3] San Nicolas met his future wife, Kathryn Santos Ko, while attending John F. Kennedy High School.

In November 1998, President Bill Clinton visited Guam and delivered a speech to a large rally gathered at Adelup.

While attending the university, he served as Speaker of the 22nd Guam Youth Congress from 1998 to 2000 and elected by his peers as President of the Student Government Association in 2002–2003.

[17][18] San Nicolas introduced a bill in 2015 to repeal the elected and appointed officials' pay raises, among other related matters.

[20] San Nicolas revisited repealing the pay raises for elected and appointed officials by introducing a new bill later in the year, but it failed passage in November.

[23] Senator San Nicolas introduced a bill in 2017, which would reduce the salaries of elected and appointed officials that had been raised by Public Law 32-208.

[34] In March 2014, San Nicolas introduced a bill to allow foster children to be included in the government of Guam's group health insurance, expanding their treatment options.

Due to the COVID-19 pandemic, Guam cancelled party primaries and all qualified candidates appeared on the November 3 general election ballot.

San Nicolas came in first in a three-way race against former Guamanian delegate to Congress Democrat Robert A. Underwood and Republican territorial senator Wil Castro, but did not win an outright majority.

In primary election San Nicolas would challenge Ginger Cruz, environmental activist David Lotz and senator Amanda Shelton.

In light of the Delegate’s impending retirement from the House and the potential for expiration of applicable statutes of limitations, the ISC recommended that the Committee refer these allegations to the Department of Justice.

[69][70][71] San Nicolas has cosponsored Puerto Rican Resident Commissioner Jenniffer González's bill to repeal the ban, which would affect cockfighting in Guam.

1713 to provide for presumptive herbicide exposure status for veterans seeking health coverage and compensation who served in Guam around the Vietnam War period.

[79][80] San Nicolas asked a number of large financial institutions to explore the possibility of lowering interest rates in rural areas.

A number of chief executives of big banks expressed interest in exploring charging lower rates to rural borrowers.