The Cretan resistance was a resistance movement against the occupying forces of Nazi Germany and Fascist Italy by the residents of the Greek island of Crete during World War II. Part of the larger Greek resistance, it lasted from 20 May 1941, when the German Wehrmacht invaded the island in the Battle of Crete, until the spring of 1945 when they surrendered to the British. For the first time during World War II, attacking German forces faced in Crete a substantial resistance from the local population. In the Battle of Crete, Cretan civilians picked off paratroopers or attacked them with knives, axes, scythes or even bare hands. As a result, many casualties were inflicted upon the invading German paratroopers during the battle.

The Battle of Crete, codenamed Operation Mercury, was a major Axis airborne and amphibious operation during World War II to capture the island of Crete. It began on the morning of 20 May 1941, with multiple German airborne landings on Crete. Greek and other Allied forces, along with Cretan civilians, defended the island. After only one day of fighting, the Germans had suffered heavy casualties and the Allied troops were confident that they would defeat the invasion. The next day, through communication failures, Allied tactical hesitation, and German offensive operations, Maleme Airfield in western Crete fell, enabling the Germans to land reinforcements and overwhelm the defensive positions on the north of the island. Allied forces withdrew to the south coast. More than half were evacuated by the British Royal Navy and the remainder surrendered or joined the Cretan resistance. The defence of Crete evolved into a costly naval engagement; by the end of the campaign the Royal Navy's eastern Mediterranean strength had been reduced to only two battleships and three cruisers.