The etiology of Kawasaki disease remains unknown despite extensive studies. Some researchers suggest that it is caused by an infectious agent. This is a case report where a patient with incomplete Kawasaki disease was found to have evidence compatible with acuteMycoplasma pneumoniaeinfection. This is one of the several case reports linkingMycoplasma pneumoniaeto Kawasaki disease as a possible trigger. This is perhaps due to a superantigen or is mediated by some other mechanism. Accurate and timely testing forMycoplasma infectionsis difficult and has its limitations. Despite this,Mycoplasma pneumoniaeshould be considered in the differential and workup for Kawasaki disease.