Bremerton is a city in Kitsap County, Washington, United States. The population was 43,505 at the 2020 census and an estimated 44,122 in 2021, making it the largest city on the Kitsap Peninsula. Bremerton is home to Puget Sound Naval Shipyard and the Bremerton Annex of Naval Base Kitsap.

The city lies west of Seattle and is connected by an automobile ferry operated by Washington State Ferries and a passenger-only ferry operated by Kitsap Transit. Bremerton spans the Port Washington Narrows and extends inland along Sinclair Inlet opposite from Port Orchard.

Bremerton is within the historical territory of the Suquamish people. The land was made available for non-Native settlement by the Treaty of Point Elliott of 1855. Bremerton was founded by German immigrant and real estate agent William Bremer in 1891. In that year, Navy Lieutenant Ambrose Barkley Wyckoff purchased approximately 190 acres (77 ha) of waterfront land on Sinclair Inlet. This land was owned by the Bremer family. Three years earlier, a U.S. Navy commission determined that Point Turner, between the protected waters of the Sinclair and Dyes inlets, would be the best site in the Pacific Northwest on which to establish a shipyard. Recognizing the large number of workers such a facility would employ, Bremer and his business partner and brother-in-law, Henry Hensel, purchased the undeveloped land near Point Turner at the inflated price of $200 per acre. In April 1891, Bremer arranged for the sale of 190 acres (77 ha) to the Navy at $50 per acre. This land became part of the initial footprint of the Puget Sound Navy Yard.

Bremerton was incorporated on October 15, 1901, with Alvyn Croxton serving as the city's first mayor. Progress in the new city soon faced a major crisis, as Assistant Secretary of the Navy Charles Darling moved all repair work to the Mare Island Navy Yard in California in November 1902. Darling cited reports from commanders that the Bremerton waterfront was rife with prostitution, opium houses and frequent strongarmed robberies of sailors. Politics were probably also at play, as local newspapers reported that the city's incorporation left the shipyard essentially landlocked without room to expand. A dispute ensued between Mayor Croxton, who wanted to shutter all saloons in Bremerton, and three members of the city council, who attempted to block his efforts. Croxton eventually won out, and the council voted to revoke all liquor licenses in June 1904. With the ban, Darling reestablished the navy yard as a port of call. Saloons had begun to return to business within two years, however.

In 1908, the city library and Union High School were established to serve the educational needs of the 2,993 residents recorded in the 1910 U.S. census. During World War I, submarine construction and the addition of a third drydock caused the shipyard's workforce to balloon to over 4,000 employees. Growth due to the war effort and the 1918 annexation of the city of Manette, east of Bremerton on the Port Washington Narrows, can be seen in the 1920 census, which reported a population of 8,918. Bremerton absorbed Charleston, its neighboring city to the south in 1927. The population reached 10,170 in 1930.

Manette was linked to Bremerton by the Manette Bridge, a 1,573-foot (479 m) bridge constructed in June 1930. Prior to this time, the trip could only be made by ferry or a long trip around Dyes Inlet through Chico, Silverdale, and Tracyton on mostly unimproved roads. This wooden bridge was replaced with a concrete and steel structure in October 1949. It was replaced by the new Manette Bridge in 2011. At the shipyard, the 250-foot-tall (76 m) Hammerhead Crane No. 28 was completed in April 1933. One of the nation's largest, it is capable of lifting 250 tons and continues to dominate the Bremerton skyline.

At the peak of World War II, the Bremerton area was home to an estimated 80,000 residents due to the heavy workload of shipbuilding, repair and maintenance required for the Pacific war effort. Most of the relocation was temporary, though, and only 27,678 citizens were left in the city by 1950. During the 1940s, presidents Franklin D. Roosevelt and Harry S. Truman both visited Bremerton. Roosevelt made a campaign stop at the Puget Sound Naval Shipyard on August 12, 1944, giving a national radio address in front of a backdrop of civilian workers. During the course of his 35-minute speech, it is believed the president suffered an angina attack, experiencing severe chest and shoulder pain. An electrocardiogram was immediately administered once he left the podium, but it showed nothing abnormal.

President Truman took a two-day tour of Washington state in 1948, speaking from the balcony of the Elks Club on the morning of June 10. Local legend has it that a man in the large Pacific Avenue crowd yelled the infamous "Give 'em hell, Harry!" line for the first time. This is a matter of dispute, however, as local newspapers quoted the man as having shouted "Lay it on, Harry!" Despite this, there is a bronze plaque attached to the corner of the building declaring that spot to be the place where the phrase "Give 'em hell, Harry" was first uttered.