Glacier Bancorp, Inc. is a regional multi-bank holding company headquartered in Kalispell, Montana, United States. It is a successor corporation to the Delaware corporation originally incorporated in 1990. The company provides personal and commercial banking services from 221 locations in Montana, Idaho, Utah, Washington, Wyoming, Colorado, Arizona, and, Nevada.

The company offers a wide range of banking products and services, including: retail banking; business banking; real estate, commercial, agriculture, and consumer loans; mortgage origination and loan servicing. Glacier Bancorp Inc. serves individuals, small to medium-sized businesses, community organizations and public entities.

As of December 31, 2024, the Bank consists of seventeen bank divisions and a corporate division. The bank divisions operate under separate names, management teams and advisory directors and include the following:

First Federal Savings and Loan, now known as Glacier Bank (a subsidiary of Glacier Bancorp, Inc.) was founded in 1955 in Kalispell, Montana by a group of local businessmen. With a charter costing $150,000 in 1955, the founding directors raised $172,000 from 127 Flathead citizens to officially get the bank off the ground.

In 1984, the bank went public as First Federal Savings Bank of Montana. Glacier Bancorp Inc. was established in 1990 as the parent company of First Federal. First Federal was then renamed to Glacier Bank in 1992.

On February 25, 2013, Glacier Bancorp, Inc. acquired Wyoming-based First State Bank, which held $281 million in assets as of December 31, 2012.

On March 1, 2015, Glacier Bancorp, Inc. acquired Ronan-based Community Bank, which held $175 million in assets as of December 31, 2014.

In 2017, Glacier Bancorp merged with First Security Bank.