Parkour (sometimes abbreviated to PK) or l'art du déplacement English: the art of displacement) is an activity with the aim of moving from one point to another as efficiently and quickly as possible, using principally the abilities of the human body.

It is meant to help one overcome obstacles, which can be anything in the surrounding environment - from branches and rocks to rails and concrete walls - and can be practiced in both rural and urban areas. Parkour practitioners are referred to as traceurs, or traceuses for females.

Founded by David Belle in France, parkour focuses on practicing efficient movements to develop one's body and mind to be able to overcome obstacles in an emergency. It may also be a form of entertainment or pastime.

L'art du déplacement is a type of freedom. It is a kind of expression, trust in you. I do not think there is a clear definition for it. When you explain it to people, you say: yes I climb, I jump, I keep moving! It is the definition! But no one understand. They need to see things. It is only a state of mind. It is when you trust yourself, earn an energy. A better knowledge of your body, be able to move, to overcome obstacles in real world, or in virtual world, thing of life. Everything that touch you in the head, everything that touch in your heart. Everything touching you physically." - Châu Belle Dinh

There are fewer predefined movements in parkour than gymnastics, as it does not have a list of appropriate "moves". Each obstacle a traceur faces presents a unique challenge on how they can overcome it effectively, which depends on their body type, speed and angle of approach, the physical make-up of the obstacle, etc. Parkour is about training the bodymind to react to those obstacles appropriately with a technique that works. Often that technique cannot and need not be classified and given a name. In many cases effective parkour techniques depend on fast redistribution of body weight and the use of momentumto perform seemingly impossible or difficult body maneuvers at speed. Absorption and redistribution of energy is also an important factor, such as body rolls when landing which reduce impact forces on the legs and spine, allowing a traceur to jump from greater heights than those often considered sensible in other forms of acrobatics and gymnastics.