Pharmacists are trusted and easily accessible healthcare providers. We assessed awareness and knowledge of symptoms, etiology, and treatment of autism spectrum disorders (ASDs) among pharmacists practicing in Palestine. The pharmacists reported low familiarity with ASDs. The median score on the 12-item knowledge section was 50.0% with an interquartile range of 16.7%. Having course(s) or lecture(s) on ASDs during pharmacy degree program was significantly associated with familiarity (p-value < 0.001), knowledge (p-value < 0.001), and confidence (p-value < 0.05) scores. Nearly 62% of the pharmacists reported as not feeling confident enough in their ability to counsel parents about medications used for their children with ASDs and their side effects. This study revealed gaps in awareness and knowledge of ASDs among pharmacists.