An advanced shielding technology implemented on Starfleet starships in the late 24th Century. Regenerative shielding quickly analyses an attacking weapon's frequency and then modulate shield frequency to decrease damage without depleting shield energy.

The Borg assimilated Regenerative shielding from a species known as Tuktak, however it proved impractical for Borg vessels, especially the very massive Borg cubes, so the Collective modified the technology for drones' personal protection instead.