Luisa Rosario Seijo Maldonado (born 4 August 1950) is a Puerto Rican academic, activist, and social worker.

[2][7] During her time there she became the first person from the bachelor's program to do their practice at the service center in La Playa, Ponce just after it was opened by Sor Isolina Ferré in 1968.

[11][12] This is done through the participatory action research method, which consists of going to disadvantaged communities close to where students live and work with the residents to increase their quality of life.

[11] Through the UICD, Seijo collaborated with students from the Lyle School of Civil Engineering at Purdue, through their EPICS program, to develop a new community water system in Humatas, Añasco.

"[17] After Hurricane María, the Institute received a grant from the Puerto Rico Relief Fund of South Central Wisconsin to make the community of Guayabota, Yabucoa sustainable in terms of food, electric power and plumbing.

"[32][33] On November of the same year she led the silent "March for Peace and Equity", commemorating the women that had been killed as a result of gender-based violence in the preceding eleven months.

[34] In April 2019 she was invited as a speaker on "Civic Sector Engagement in Recovery" at the In Pursuit of Puerto Rican Studies Research Summit of the Centro de Estudios Puertorriqueños held at the University of Central Florida.

[37] All her projects are collaborations, and her support even extends to lending use of her own office for other causes, as was the case with a food and water collection run by the Adventist Development and Relief Agency (ADRA) and Tau Beta Pi (ΤΒΠ) in 2011.

[41] Her daughter works with the Conservation Trust of Puerto Rico, as supervisor of various vivariums, including José Ramon Fernández's NRHP Hacienda La Esperanza[42] and leading the Para La Naturaleza's campaign to plant 750,000 trees in a period of seven years,[43] as well as being the Treasurer of Puerto Rico's first agricultural trust.