Científico

• Gabino Barreda, a precursor of the group. A physician and professor of medicine, Barreda studied in Paris under Auguste Comte between 1847 and 1851 and is widely credited with introducing positivism in Mexico. Put in charge of fulfilling the 1857 Constitution's promise of secular public education by the early Juárez government, Barreda organized the National Preparatory School, the first secular school of higher learning in Mexico, which opened in 1868 and became the training ground for many of the younger Científicos.
• :es:Manuel Romero Rubio|Manuel Romero Rubio, Secretary of the Interior from 1884 to 1895 was founding member of the group, and its original leader and protector. With his death, Limantour –his political protégé– commenced to direct the Científicos. He also was the father in law of Porfirio Díaz.
• José Yves Limantour, Ministro de Hacienda from 1893 until the fall of the Díaz regime in 1911; considered the political leader of the faction.
• Justo Sierra, the leading intellectual and spokesman of the circle.
• The writers and journalists Francisco Bulnes and Emilio Rabasa, co-founders of the newspaper El Universal, both considered spokesmen for the Científicos.
• Enrique Creel, a wealthy businessman and landowner, an influential member of the powerful Creel-Terrazas Family that dominated the northern state of Chihuahua, of which he was governor from 1904 until the fall of the Díaz regime in 1911.
• Luis Terrazas, Founder of the Creel-Terrazas Family, father-in-law of Enrique Creel, and one of the richest landowners in the Republic of Mexico; he helped to bankroll the faction.
• The lawyers :es:Pablo Macedo|Pablo Macedo and Joaquín Casasús.
• :es:Nemesio García Naranjo|Nemesio García Naranjo, who later became Secretary of Education under Victoriano Huerta in 1913.
• Emilio Pimentel, lawyer, governor of Oaxaca from 1902 to 1911.
• Rosendo Pineda, lawyer, influential backer of Porfirio Díaz in the state of Oaxaca.
• :es:Rafael Reyes Spíndola|Rafael Reyes Spíndola, founder and publisher of the Mexico City newspaper El Imparcial, considered the "semi-official newspaper of the Porfiriato."