Cheek kissing is a ritual or social kissing gesture to indicate friendship, family relationship, perform a greeting, to confer congratulations, to comfort someone, to show respect.

Cheek kissing is very common in the Middle East, the Mediterranean, Southern, Central and Eastern Europe, the Low Countries, the Horn of Africa, Central America and South America. In other countries, including the U.S. and Japan, cheek kissing is common as well at an international meeting between heads of state and First Ladies or members of royal and the Imperial families.

Depending on the local culture, cheek kissing may be considered appropriate among family members as well as friends and acquaintances: a man and a woman, two women, or two men. The last has different degrees of familiarity.

In Eastern Europe, male–female and female–female cheek kissing is a standard greeting among friends, while male–male cheek kisses are less common. Eastern European communist leaders often greeted each other with a socialist fraternal kiss on public and state occasions.

In a cheek kiss, both persons lean forward and either lightly touch cheek with cheek or lip with cheek. Generally the gesture is repeated with the other cheek, or more, alternating cheeks. Depending on country and situation, the number of kisses range from one to four. Hand-shaking or hugging may also take place.

Cheek kissing is used in many cultures with slightly varying meaning and gesture. For example, cheek kissing may or may not be associated with a hug. The appropriate social context for use can vary greatly from one country to the other, though the gesture might look similar.

In cultures and situations where cheek kissing is the social norm, the failure or refusal to give or accept a kiss is commonly taken as an indicator of antipathy between the people, and to dispel such an implication and avoid giving offense may require an explanation, such as the person has a contagious disease such as a cold.