Retinoid receptors are type II nuclear receptors (a class of proteins) that bind to retinoids. When bound to a retinoid, they act as transcription factors, altering the expression of genes with corresponding response elements.

Subtypes include:

• Retinoic acid receptors (RARs)
• Retinoid X receptors (RXRs)
• RAR-related orphan receptors (RORs)