This article lists the members of the Jenkins Family, the member of the current skinny green Old Man Jenkins.
|Many unknown ancestors|
|Great Great Grandpa Jenkins|
|Great Grandpa Jenkins|
|Very Old Man Jenkins Sr.|
|Old Man Jenkins|
|Old Man Jenkins' grandson|
Old Man Jenkins
Main article: Old Man Jenkins
Old Man Jenkins is an elderly fish that sometimes lives in a retirement home or a house near his barn. He has an unknown son or daughter. He is commonly used as a side gag through the series. He is also seen as many forms such as the blue and wheelchair Jenkins throughout the series but his skinny green form is his official current form.
Old Man Jenkins' grandson
Main article: Old Man Jenkins' grandson
He is the unnamed grandson of Old Man Jenkins. SpongeBob mentions that he never calls his grandfather. He is the son of Old Man Jenkins' unknown son or daughter.
Very Old Man Jenkins
Main article: Very Old Man Jenkins
Old Man Jenkins' father. His son is named after him.
Main article: Grandpa Jenkins
Old Man Jenkins' grandfather and Very Old Man Jenkins' father. Has glasses like Old Man Walker.
Great Grandpa Jenkins
Main article: Great Grandpa Jenkins
Old Man Jenkins' great grandfather, Very Old Man Jenkins' grandfather, and Grandpa Jenkins' father. He is the oldest member of the Jenkins family that is still alive.
Great Great Grandpa Jenkins
Main article: Great Great Grandpa Jenkins
Old Man Jenkins' deceased great great grandfather. He is the father of Great Grandpa Jenkins, grandfather of Grandpa Jenkins, and great grandfather of Very Old Man Jenkins. He is a glowing red ghost and appears to be from Ancient China.
Main article: Old Man Jenkins' ancestors
Old Man Jenkins' many ancestors from many different eras. They are all glowing red ghosts. The oldest known ancestor in the group is the caveman Jenkins.