Abstract: A form gap filling device for filling or blocking form gaps in construction forms used to fabricate foundations, walls and similar structures. The form gap filling device is comprised of an elongated member having an elongated support centrally and longitudinally formed thereon, angled main portions formed on the elongated support and extending outward from the elongated support, angled sealing portions formed on the main portions and extending outward from the main portions and at least one spring biased rotatable handle rotatably attached to the elongated member. The at least one spring biased rotatable handle is medially positioned on and removably contacts a support surface of the elongated support. The at least one spring biased rotatable handle acts in concert with the sealing portions to removably engage adjacent spaced apart form elements thereby filling or blocking construction form gaps.