Sikhism is a religion and monotheism of morality

Sikhism, referring to the Sikh religion, is an ethical monotheism that combines parts of Hinduism and Islam and believes in equality and service to others. Guru Nanak (1469–1539), a mystic who thought that God transcended theological divides, founded it. Sikhism is based on Guru Nanak's teachings as well as those of nine other gurus who came after him.

The term "Sikh" implies "learned" or "seeker of truth". Sikhism promotes equality, social justice, humanitarian service, and tolerance for other religions. The central teaching of Sikhism is to practice spiritual devotion and reverence for God at all times while also practicing the qualities of honesty, compassion, humility, and charity in daily life. Sikhism rejects caste and class hierarchies and places a premium on humanitarian service.

With around 25 million Sikhs worldwide, Sikhism is the fifth-largest religion in the world. While India is home to 80% of the world's Sikhs, the majority of whom live in the state of Punjab, there are also considerable numbers in Canada, the United Kingdom, the United States, Australia, New Zealand, East Africa, Malaysia, Singapore, and Thailand. It is believed that there are between 700,000 and 900,000 Sikhs in the United Kingdom.

Sikhs make up around 14% of all people of Indian heritage who have moved to Australia. According to the 2006 Census, there were 26,429 Sikhs in Australia, with New South Wales having the most. The Northern Territory has about 15 Sikh families.