  Determining habitable zones in binary star systems can be a challenging task
due to the combination of perturbed planetary orbits and varying stellar
irradiation conditions. The concept of "dynamically informed habitable zones"
allows us, nevertheless, to make predictions on where to look for habitable
worlds in such complex environments. Dynamically informed habitable zones have
been used in the past to investigate the habitability of circumstellar planets
in binary systems and Earth-like analogs in systems with giant planets. Here,
we extend the concept to potentially habitable worlds on circumbinary orbits.
We show that habitable zone borders can be found analytically even when another
giant planet is present in the system. By applying this methodology to
Kepler-16, Kepler-34, Kepler-35, Kepler-38, Kepler-64, Kepler-413, Kepler-453,
Kepler-1647 and Kepler-1661 we demonstrate that the presence of the known giant
planets in the majority of those systems does not preclude the existence of
potentially habitable worlds. Among the investigated systems Kepler-35,
Kepler-38 and Kepler-64 currently seem to offer the most benign environment. In
contrast, Kepler-16 and Kepler-1647 are unlikely to host habitable worlds.
