Otto has been married three times. He first married Olga Von Ziegesar and later divorced after being together for several years. His second marriage was to Sharon Mckemie and had two children with her, sons Levi and u003ca href=u0022https://informationcradle.com/eivin-kilcher/u0022 target=u0022_blanku0022 rel=u0022noopener noreferreru0022u003eEivin Kilcheru003c/au003e. His second marriage, unfortunately, ended up in a divorce for unknown reasons. Kilcher is currently married to Charlotte Irene Adamson, a biologist.