Harold Joseph Rahm (February 22, 1919 – November 30, 2019) was a Catholic priest and Jesuit, who became well known for his work with gangs and inner-city youth in El Paso, Texas, US.

Soon after ordination, in 1952, he was appointed assistant pastor at the large, Spanish-speaking parish of Sacred Heart in El Paso, covering the Chihuahuita district and Segundo Barrio.

[3]: 101  As he tackled the problems of youth gangs and drugs, he found ready help in downtown businessmen, in members of the El Paso Sertoma Club,[9] and in the City Parks and Recreations Department.

He was given Monday night and Sunday afternoon slots on KROD-TV where he gave the youth a chance to perform – dance, dialogues, plays, and contests.

[3] The better-off students in the parish attended Bowie High school, and from there he got a leader for his Guadalupano Club, Edmundo Rodriguez,[10] an all-district football center who would join the Jesuits and later become Rahm's provincial superior.

Thomas Browne, Deputy Director of the Office of Anticrime Programs in the State Department’s Bureau of International Narcotics and Law Enforcement Affairs, asked who his greatest role model was, replied, Father Harold Rahm, a Jesuit priest from Texas who is now very active in Brazil.

The padre created the first successful anti-gang programs in the United States in the 1960s and was prominently featured by Sen. Estes Kefauver (D-Tenn.) in congressional field hearings across the nation.

Instead, he went to Brazil and created over 2,000 drug treatment, prevention and social service programs, including national, regional and global networks for prevention/treatment specialists.

[3] He recruited as assistant Ventura "Tula" Irrobali, a hero in the neighborhood for his basketball stardom at Texas Western College, now UTEP.

Rahm's Jesuit superior, knowing that his projects in El Paso had able helpers, asked him to go to Brazil, and allowed him to choose his successor.

[14] In Texas Rahm had honed his skills at organizing, fundraising, and emphasizing the spiritual component, letting others run the programs he began.

Archbishop Dom Paulo de Tarso welcomed him to the Archdiocese of Campinas where Rahm organized parishioners to construct San Pedro Apostle church building,[16] while he got to work on studying Portuguese.

[20] Rahm asked Jesuit priest Casimiro Irala to teach liturgical songs to young people, and thus TLM was born (Musical Leadership Training).

[16] In 1976, concerned about women who turned to prostitution for a living in the neighborhood of Jardim Itatingahe, Rahm invited the Good Shepherd Sisters to assist in that area.

[31] In 2006 he began the campaign Faith in Prevention, an ecumenical movement, and produced a guidance booklet published by SENAD (National Policy on Drugs).

[32] In 2007 Rahm began Christian Yoga courses, bringing this practice to several cities in Brazil, with the theme of living in harmony with God, with nature.

[31] In 2009 Rahm was appearing weekly on Television and Life network "Tough Love", Mondays, 8-8:30 a.m., and "Relax and Live Happy", Tuesdays, 8-8:30 a.m., and on the program "Pastoral of Sobriety" on TV Seculo XXI, 7:30-9:00 p.m.[3] He continued to hold honorary executive positions with Therapeutic Community organizations in Brazil (FEBRACT), Latin America (FLACT), and internationally (WFTC), and to serve as advisor on chemical dependency for the National Conference of Brazilian Bishops (CNBB).