The Oncidiinae is a subtribe within the Orchidaceae that consists of a number of genera that are closely related. It is possible to form hybrids in some instances where multiple genera within the Oncidiinae. These hybrids are often colloquially referred to as "intergenetics."

Examples of primary genera include:

• Macradenia
• Macrochilus
• Macroclinium
• Mesoglossum
• Mexicoa
• Miltonia
• Miltoniopsis
• Odontoglossum
• Oncidium
• Ornithophora
• Osmoglossum
• Otoglossum
• Plectrophora
• Polyotidium
• Psychopsiella
• Psychopsis
• Psygmorchis
• Pterostemma