Sadie Delaney may refer to:

• Sadie Peterson Delaney, African-American librarian and bibliophile
• Sadie Delany, (born Sarah Louise Delaney) African-American educator and civil rights pioneer

• Preclinical development
• Pre-clinical investigation
• Preclinical investigation
• Preclinical research
• Precoce de hongrie
• Precoce de Kientzheim
• Precoce du vaucluse
• Precoce noir
• Precocious (horse)
• Precocious puberty, gonadotropin-dependent
• Precode
• Pre-code film
• Pre-code films
• Pre-code Hollywood
• Precoeruleus
• Pre-Collision Assist
• Pre-Collision Intelligent Headrest
• Pre-Collision System with Pedestrian-avoidance Steer Assist
• Pre-Colombian Africa
• Pre-Colonial
• Pre-colonial history of Northern Nigeria
• Pre-Columbian Africa
• Pre-Columbian Art
• Pre-Columbian contact
• Pre-Columbian culture