Ruthzee Louijeune (born 1987) is an American politician and lawyer serving as president of the Boston City Council.

During high school, she interned in the office of State Representative Marie St. Fleur as part of the Ward Fellowship Program.

As a first-time candidate Louijeune had a strong showing in the 2021 election, finishing third in the at-large race behind incumbent council members Michael F. Flaherty and Julia Mejia.

According to U.S. Census Bureau data, Greater Boston is home to the third-largest Haitian diaspora population in the United States.

In her first term, Louijeuene served as chair of the Civil Rights Committee[19] and vice-chair of the Housing and Community Development Committee[20] In June 2022, the Boston City Council unanimously adopted a resolution introduced by Louijeune and Councilors Tania Fernandes Anderson and Kendra Lara which apologized for the city's historical role in the Atlantic slave trade.

[22] In late 2022, Louijeune played a key role in the passage of a 20% pay increase for members of the Boston Council, which was vetoed by Mayor Michelle Wu.

[23] Louijeune and her City Council colleague Kendra Lara authored a resolution that was passed by the Boston City Council in late 2022 which urged Mayor Michelle Wu to raise the affordable housing unit requirements for new residential developments from 13% to 20% and to lower the threshold for which the requirements apply from buildings with nine or more units to buildings with five or more.

[26] In April 2023, the council unanimously adopted a resolution introduced by Louijeuene and Liz Breadon expressing support for an effort by residents and fellows at Mass General Brigham to form a trade union.

Flynn had assigned this task to Louijeune in order to avoid having Liz Breadon (as head of the Redistricting Committee) oversee it.

[29] Louijeune's leadership in resolving the contentious redistricting matter raised her profile in the city's politics and won her praise.

[28] In August 2023, Boston Herald political columnist Joe Battenfeld characterized Louijeune as having quickly become a "rising star" on the city council.

She deftly and quickly filled the void, shutting down the dithering that critics often point to as a negative trait of city government.