Juan Ramón Lacadena Calero (born 14 November 1934) is a Spanish agronomical engineer.
He studied in the Escuela Especial de Ingenieros Agrónomos in Madrid.
He collaborated in the Sociedad Española de Genética (Secretary, 1973–1985; President, 1985–1990).
He has made more than 100 papers and scientific monographs about chromosomal behaviour in cytogenetics and more than 80 publications about genetics and bioethics.
He was a member in the Comisión Nacional de Reproducción Humana Asistida (1997) and in the International Society of Bioethics (1997).