Sure-footedness is the ability, especially when hiking or mountain climbing, to navigate difficult or rough terrain safely. Such situations place demands on a person's coordination and reserves of strength as well as requiring sufficient appreciation of the terrain. A person who is sure-footed is thus unlikely to slip or stumble, and will have a good head for heights when required.

On many hiking trails and mountain tours, sure-footedness is assumed to be a prerequisite without ever being defined. The term is frequently used in the literature presumably to ensure that the reader is made sufficiently aware that, under certain circumstances, one false step may lead to serious consequences.

Although there is no standard definition of sure-footedness, the following attributes generally apply:

The requirement for sure-footedness is usually only mentioned when speaking about routes on which no climbing ability is required, such as Class A routes where the terrain is gentle to steeply sloping and usually rocky, but mostly negotiable without protection or safety equipment.

It is not necessarily the case that someone with climbing experience is automatically sure-footed, particularly in an era of rock gyms, where technical climbing skill can be acquired entirely indoors.

The concept of sure-footedness is inextricably related to having a head for heights, as someone can be said to be generally sure-footed on modest, unexposed terrain, but cannot be so described if they cannot retain the capacity at heights.

Sure-footedness is primarily a natural attribute, influenced to high degrees by age, health, and physical fitness. But it can, to a certain extent, be acquired through training.

It can be enhanced regardless of inborn level by regular activity in steep, rough terrain. While helpful with balance, hiking sticks can impede the ability to develop sure-footedness on its own.