Abstract: An articulating armrest includes a first protrusion and a second protrusion that protrude from a member a predetermined spacing apart. Each protrusion aligns within a separate track within a housing configured for stowing the armrest within a seat back. The two tracks include straight and curved portions configured to articulate the armrest. Specifically, the armrest moves along a curvilinear path between stowed and deployed positions by translating along the tracks and pivoting about the second protrusion. The armrest may stow in a seat back and beneath the seat bottom to provide a full length armrest when deployed, and the armrest may stow flush with the seat back for sitting against. Mechanical tension may be provided to automatically deploy the armrest, and a rotational damper and a gas spring may be used to control the speed at which the armrest deploys.