| Adi Granth | Adi means first, Adi Granth is the first edition of the Guru Granth Sahib as was compiled by Guru Arjan Dev Ji in 1604 (AD). |
| Ahankar | -> Hankar |
| Akal Purkh | It means Timeless One, or The Being Beyond Time and is applied as a name of God. |
| Akhand Path | An uninterrupted continuos reading of the Guru Granth Sahib. It is undertaken by a team of readers and takes approximately 48 hours. |
| Amrit | The sweet water which is used during the Khalsa initiation ceremony. Literally: nectar of immortality. |
| Amrit Bani | A term applied to the Sikh Scriptures, meaning the words are as sweet as nectar (Amrit). |
| Amrit Vela | The early morning hours before dawn. This is considered an auspicious time for meditation and prayer as stressed by Nanak . |
| Amritdhari | A Sikh who has undergone the Khalsa initiation ceremony. |
| Amrit Sanchar | The rite of initiation into the Khalsa brotherhood. |
| Anand | A state of bliss which defies description. It is also the name of a composition by Guru Amar Daas (page 917 of the Guru Granth Sahib ). |
| Anand Karaj | The Sikh wedding ceremony. |
| Anand Sahib | Composition by Guru Amar Daas found on page 917 of the Guru Granth Sahib . Parts of it are used in a number of Sikh ceremonies. |
| Anbhav Prakash | The enlightened perception of reality which is enjoyed by a person who has become a Gurmukh . |
| Antim Ardas | The last of the Sikh funeral rites. |
| Artha | Wealth, it is acceptable to acquire wealth, but it should not become an end to itself. |
| Asa Di Var | A collection of hymns meant to be sung at dawn. |
| Atma | The soul which is considered immortal. |