Kwanzaa is a week-long celebration held in the United States (and, more recently, Canada) but also celebrated in the Western African Diaspora.

The celebration honors African heritage in African-American culture, and is observed from December 26 to January 1, culminating in a feast and gift-giving.

Kwanzaa has seven core principles (Nguzo Saba): Unity, self-determination, collective work and responsibility, cooperative economics, purpose, creativity, and faith.

It was created by Maulana Karenga, and was first celebrated in 1966–67.

Families celebrating Kwanzaa decorate their households with objects of art; colorful African cloth such as kente, especially the wearing of kaftans by women; and fresh fruits that represent African idealism. It is customary to include children in Kwanzaa ceremonies and to give respect and gratitude to ancestors. Libations are shared, generally with a common chalice, Kikombe cha Umoja, passed around to all celebrants. Non-African Americans also celebrate Kwanzaa. The holiday greeting is "Joyous Kwanzaa".

A Kwanzaa ceremony may include drumming and musical selections, libations, a reading of the African Pledge and the Principles of Blackness, reflection on the Pan-African colors, a discussion of the African principle of the day or a chapter in African history, a candle-lighting ritual, artistic performance, and, finally, a feast (karamu). The greeting for each day of Kwanzaa is "Habari Gani?" which is Swahili for "What's the News?"