Introduction: Type I Chiari malformation is a frequent neurosurgical entity that presents in most of cases with affection of cerebrospinal fluid circulation and spinal tracts. The therapy of choice is decompression achieved by performing a suboccipital craniectomy and cervical posterior osteotomies with durotomy and duraplasty. Traditional approaches have an increased risk of bleeding and postoperative pain; they also disrupt the posterior cervical muscular-ligamentous tension band, which affects spinal biomechanics. There are no reports about minimally invasive surgery (M.I.S.) for these patients. We sought to describe a new minimally invasive approach through a small suboccipital incision without lesion to the posterior cervical muscles and ligamentum nuchae while obtaining optimal decompression margins, performing adequate repair of the dura mater, and reducing perioperative morbidity. Eleven surgical cases are presented to illustrate the procedure.