Kokshetau (Kazakh: Көкшетау, romanized: Kökşetau; [kɵkʂʲetɑw] (listen), lit. 'Blueish Mountain/Smoky-Blue Mountain'; Russian: Кокшета́у, IPA: [kəkʂɛtaʊ]), formerly known as Kokchetav (Russian: Кокчета́в, [kəktɕʲetav]; the official name between 1868 and 1993) is a lakeside city in northern Kazakhstan and the capital of Akmola Region, which stretches along the southern shore of Lake Kopa, lying in the north of Kokshetau Hills, a northern subsystem of the Kokshetau Uplands (Saryarka) and the southern edge of the Ishim Plain. It is named after the Mount Kokshe. Earlier, it was the administrative center of Kokshetau Region, which was abolished in 1997. It is also situated at the junction of the Trans-Kazakhstan and South Siberian railways. Kokshetau lies at an elevation of approximately 234 m (768 ft) above sea level.

It has 150,649 inhabitants (2022 est.), up from 123,389 (1999 census), while Akmola Region had a total population of 738,587 (2019 est.), down from 1,061,820 (1989 census), making it the tenth most populous region in Kazakhstan. The city's history has been influenced by people of many nations and religions. Kokshetau retains multiethnic population, with 59% ethnic Kazakhs (up from 36%), the rest being mostly 28% ethnic Russians (down from 42%) and other ethnic groups such as Ukrainians, Tatars and Germans. Kokshetau City Administration (area of 425 km² [164 sq mi]), with a population of roughly 165,153 residents, includes one settlement administration (which consists of the work settlement of Stantsyonny) and the Krasnoyarsk rural district, which includes two rural settlements (the villages of Krasny Yar and Kyzyl Zhuldyz).

The city is considered to have been founded in 1824 as a military fortress, while it was granted city status in 1895. It was the centre of Kokshetau Region, which was abolished in 1997. It is well known for its nature and tourist sites, such as Burabay and Zerendi, among others. The city's main football team is FC Okzhetpes. Kokshetau is about 185 km (115 mi) from Petropavl, 300 km (190 mi) northwest of the national capital Astana along the A1, 318 km (198 mi) from Omsk along the A13, and 384 km (239 mi) from Kostanay. The city is served by Kokshetau Airport (KOV).

Kokshetau is an important economic, educational, and cultural centre of the Akmola Region. Attractions in and around Kokshetau include Akmola Regional Museum of History and Local Lore, Bukpa Hill, Kokshetau City Park, Kokshetau City History Museum, Museum of Literature and Art. The northwest entrance to Burabay National Park (Kazakh: Burabai memlekettık ūlttyq tabiği parkı) and Burabay spa town is a little over 43 miles (70 km) from Kokshetau. Kokshetau was awarded the title Kazakhstan City of Culture for the year 2021.