Abstract: An air duct support for supporting air ducts and similar pipes without constricting airflow through the pipes. The support has an arcuate main body portion for receiving a portion of the conduit therein and an upright support attached to a bottom of the top portion and supporting the conduit at an elevated position in relation to a base surface. The support member may be a unitary body or telescopically extendable member. The top portion rotates 360 degrees in relation to the support member to accommodate any direction of extension of the conduit. A collar plate or a flexible strap may be positioned about an unsecured portion of the conduit to prevent displacement of the conduit in relation to the main body.