A Sikh is a follower of Sikhism. Sikhism primarily originated in 15th century Punjab region of India. The term "Sikh" has its origin in Sanskrit term शिष्य (śiṣya), meaning "disciple, student" or शिक्ष (śikṣa), meaning "instruction". A Sikh is a disciple of the Guru.
According to Article I of the "Rehat Maryada"a Sikh is defined as "any human being who faithfully believes in One Immortal Being; ten Gurus, from Guru Nanak Dev to Sri Guru Gobind Singh; Sri Guru Granth Sahib; the teachings of the ten Gurus and the baptism bequeathed by the tenth Guru; and who does not owe allegiance to any other religion". Sikhs believe in the equality of mankind, the concept of universal brotherhood of man and One Supreme God .
Sikhs are recognized by their distinctly wrapped turbans, uncut hair, and iron bracelet (kara), although in the Western world this is not necessarily the case (Sikhs not keeping uncut hair are considered apostates).
Punjab region is the historical homeland of the Sikhs, although significant communities exist around the world.