The First Battle of El Alamein (1–27 July 1942) was a battle of the Western Desert Campaign of the Second World War, fought in Egypt between Axis forces (Germany and Italy) of the Panzer Army Africa (Panzerarmee Afrika) (which included the Afrika Korps under Field Marshal (Generalfeldmarschall) Erwin Rommel) and Allied (British Imperial and Commonwealth) forces (United Kingdom, British India, Australia, South Africa and New Zealand) of the Eighth Army (General Claude Auchinleck).

The British prevented a second advance by the Axis forces into Egypt. Axis positions near El Alamein, only 66 mi (106 km) from Alexandria, were dangerously close to the ports and cities of Egypt, the base facilities of the Commonwealth forces and the Suez Canal. However, the Axis forces were too far from their base at Tripoli in Libya to remain at El Alamein indefinitely, which led both sides to accumulate supplies for more offensives, against the constraints of time and distance.

The battle and the Second Battle of El Alamein three months later are highly regarded within some of the countries that took part. In New Zealand, this is due to the country's significant contribution to the defence of El Alamein, especially the heavy role the Māori Battalion played. Members of this battalion have been labelled war heroes since, such as commander Frederick Baker, James Henare and Eruera Te Whiti o Rongomai Love, the last of whom was killed in action.