Battery Pack and Vehicle Including the Same

A battery pack with a simplified structure and a vehicle including the same are provided. The battery pack according to an aspect of the present disclosure includes a plurality of battery cell assemblies, a pack housing configured to accommodate the plurality of battery cell assemblies therein, a plurality of support plates configured to support both sides of each battery cell assembly accommodated in the pack housing, and a fixing member configured to fix mutually adjacent support plates among the plurality of support plates to the pack housing so that a gap is formed between the mutually adjacent support plates.