The Fresno County Sheriff's Office was called out to a home near Shaw and Grantland just before midnight on Saturday.
Deputies found 79-year-old Freeman Hunter Jr. suffering from injuries. Despite efforts to save him, he was declared dead at the scene.
Authorities took his son, 21-year-old Freeman Hunter III, into custody. He was booked in the Fresno County Jail with a $1 million bail.
Deputies are still investigating what led up to the stabbing.
Anyone with more information is asked to contact the Fresno County Sheriff's Office.
If you are the victim of domestic abuse, or you know someone who is, there is help available 24/7. In Fresno County, call the Marjaree Mason Center at (559) 233-4357. In all other locations, call the National Domestic Violence Hotline at (800) 799-7233.