The minor district (king amphoe) Pak Chom was created on 1 September 1967, when the three tambons, Pak Chom, Hat Khamphi, and Chiang Klom, were split off from Chiang Khan district.
On 1 September 1967, a minor district (king amphoe) named Pak Chom was created by separating the tambons Pak Chom, Hat Khamphi, and Chiang Klom from Chiang Khan district.