Kruger National Park (Afrikaans: [ˈkry.(j)ər]) is a national park in South Africa covering an area of 19,623 km² (7,576 sq mi) in the provinces of Limpopo and Mpumalanga in the country's northeast. It extends 360 km (220 mi) from north to south and 65 km (40 mi) from east to west. The administrative headquarters are in Skukuza. Areas of the park were first protected by the government of the South African Republic in 1898, and it became South Africa's first national park in 1926. It is part of Kruger to Canyons Biosphere, an area designated as a biosphere reserve.

A Game Commission was established in 1891 with J.M. Malan of Rustenberg as chairman, which resulted in the establishment of the game law of 1891. It must be noted that there were already individual farmers as far back as 1867 who published notices in the Staatscourant to prohibit hunting and so try to preserve the game on their own land. In total 200 owners protected game on about 300 farms between 1867 and 1881 in this manner. One of these farmers was pioneer Alexander Marsh Robertson who owned two adjacent farms, Rolfontein and Elandsberg, extending over 7600 morgen in the Wakkerstroom district. Robertson was the first farmer to fence part of his property to create a game camp in the eastern Transvaal, some 500 morgen using leadwood and barbed wire. The creation of the game camp however was serendipity. Robertson initially erected the fence to restrain his horses, but the fence also provided the added benefit of protecting the ground game. Game in this camp increased significantly due to the protection offered by the fence. President Paul Kruger regularly toured the rural areas to visit his people. He heard about the success of Robertson's "game" camp and wrote to Albertus Stoop his son Tjaart's future father-in-law, himself a keen conservationist and neighbour of Robertson, to arrange a visit to Rolfontein so that he could see the experiment first hand and stay the night. Kruger was very impressed with Robertson's unexpected success and continued to show great interest in the Wakkerstroom farmer's efforts to preserve game over the next few years. He visited Rolfontein again in 1892, and it was at this visit, at a great braai held in his honour that he spoke to the importance of Rolfontein in protecting smaller game and proceeded to lay out, for the first time in a public forum, his plan to establish the first Game Reserve in Africa along the Sabi River to preserve the big game that needed a much larger protected habitat to thrive.

Sabi Game Reserve was initially created to control hunting and to protect the diminishing number of animals in the area. The reserve was located in the southern one-third of the modern park. James Stevenson-Hamilton became the first warden of the reserve in 1902. Singwitsi Reserve, named after the Shingwedzi River and now in northern Kruger National Park, was proclaimed in 1903. During the following decades all the native tribes were removed from the reserve and during the 1960s the last were removed at Makuleke in the Pafuri triangle. In 1926, Sabi Game Reserve, the adjacent Shingwedzi Game Reserve, and farms were combined to create Kruger National Park.

During 1923, the first large groups of tourists started visiting the Sabi Game Reserve, but only as part of the South African Railways' popular "Round in Nine" tours. The tourist trains travelled the Selati railway line between Komatipoort on the Mozambican border and Tzaneen in the then northern Transvaal.

Kruger National Park was proclaimed in 1918 and a commission established to pursue its planning and development. The first secretary of the commission was Johannes Andries (Dries) de Ridder, a civil servant. Warden James Stevenson-Hamilton retired on 30 April 1946, after 44 years as warden of the Kruger Park. He was replaced by Colonel J. A. B. Sandenbergh of the South African Air Force. In 1959, work commenced to completely fence the park's boundaries. Work started on the southern boundary along the Crocodile River and in 1960 the western and northern boundaries were fenced, followed by the eastern boundary with Mozambique. The purpose of the fence was to curb the spread of diseases, facilitate border patrolling and inhibit the movement of poachers.

The Makuleke area in the northern part of the park was forcibly taken from the Makuleke people by the government in 1969 and about 1500 of them were relocated to land to the south so that their original tribal areas could be integrated into the greater Kruger National Park.

In 1996 the Makuleke tribe submitted a land claim for 198.42 km² (19,842 ha), namely the Pafuri or Makuleke region in the northernmost part of the park. The land was given back to the Makuleke people, however, they chose not to resettle on the land but to engage with the private sector to invest in tourism. This resulted in the building of several game lodges from which they earn royalties.^{[citation needed]}

In the late 1990s, the fences between the Kruger Park and Klaserie Game Reserve, Olifants Game Reserve, and Balule Nature Reserve were dropped and incorporated into the Greater Kruger Park with 400,000 ha (4,000 km²) added to the Reserve. In 2002, Kruger National Park, Gonarezhou National Park in Zimbabwe, and Limpopo National Park in Mozambique were incorporated into a peace park, the Great Limpopo Transfrontier Park.