What is the collective noun for a group of lions?

The collective noun for a group of lions is a pride.

A pride is a social group usually made up of related lionesses, their cubs, and one or more adult males. Lionesses often remain in the pride where they were born, while young males typically leave when they reach maturity and may later form coalitions with other males.

Prides cooperate in defending territory, raising cubs, and hunting. Lionesses commonly hunt together, although the exact roles depend on the prey, habitat, and group composition. Pride sizes vary widely: an average pride may contain about 15 lions, while exceptionally large groups can reach around 30.

“Pride” is sometimes confused with terms such as herd, pack, or flock. “Pack” is generally associated with social carnivores such as wolves and African wild dogs; “herd” is more often used for grazing mammals; and “flock” usually describes birds. Groups of male lions are more specifically called coalitions.