An airway manifold (10) includes a manifold body having an upper body portion (12) and a lower body portion (30). The body portions (12,30) are engaged such that the upper body portion (12) is rotatable relative to the lower body portion (30), whereby a generally hollow interior space is defined. The lower body portion (30) has a port open to the interior space, and the upper body portion (12) includes a plurality of ports (20) open to the interior space. A first upper body port is axially alignable with the lower body port to define a substantially linear passageway therebetween when the upper body portion is at a first rotatable position relative to the lower body portion. A second upper body port is axially alignable with the lower body port to define a substantially linear passageway therebetween when the upper body portion is at a second rotatable position.