Si Jose Manuel "Chel" Icasiano Diokno (, namondag Pebrero 23, 1961) iyo sarong Pilipinong abogado, edukador, asin tagabusol nin mga deretsong pantawo (human rights advocate). Minasirbi siya ngunyan komo pamayo kan Free Legal Assistance Group o FLAG asin an kagmoknang dekano kan Kolehiyo nin Ley nin Unibersidad nin De La Salle (na inaapod na ngunyan na Tañada-Diokno College of Law). Nagi man siyang special counsel kan Senate Blue Ribbon Committee.