A recliner is an armchair or sofa that reclines when the occupant lowers the chair's back and raises its front. It has a backrest that can be tilted back, and often a footrest that may be extended by means of a lever on the side of the chair, or may extend automatically when the back is reclined.

A recliner is also known as a reclining chair, lounger and an armchair.

Modern recliners often feature an adjustable headrest, lumbar support and an independent footstool that adjusts with the weight and angle of the user's legs to maximize comfort. Additional features include heat, massage and vibration. Some models are wheelchair accessible.

Recliners can also accommodate a near supine position for sleeping (making them a multifunctional furniture), and are common in airplanes and trains, as well as in homes.