Naomichi Matsumoto (松本 直通, Matsumoto Naomichi, born August 3, 1961) is a Japanese physician and medical geneticist who identified several causative genes for human diseases, including Sotos syndrome (2002), Marfan syndrome type II (2004), Ohtahara syndrome (2008), West syndrome (2010), Microphthalmia with limb anomalies (2011), Autosomal-recessive cerebellar ataxias (2011), Hypomyelination with cerebellar atrophy and hypoplasia of the corpus callosum (HCAHC) (2011), Porencephaly (2012), and Coffin–Siris syndrome (2012).