The Zafarnāma /zəfərnɑːmɑː/ (Punjabi: ਜ਼ਫ਼ਰਨਾਮਾ, Persian: ظفرنامہ‎, Hindi: ज़फ़रनामा, lit. Epistle of Victory) was a victory letter sent by Guru Gobind Singh in 1705 to the Mughal Emperor of India, Aurangzeb after the BATTLE OF CHAMKAUR. The letter is written in Persian verse.

Guru Gobind Singh sent Bhai Daya Singh to Ahmednagar to give it to Aurangzeb.

In this letter, Guru Gobind Singh reminds Aurangzeb how he and his henchmen had broken their oaths sworn upon the Qur'an. He also states that in spite of his several sufferings, he had won a moral victory over the Emperor who had broken all his vows. Despite sending a huge army to capture or kill the Guru, the Mughal forces did not succeed in their mission.

In the 111 verses of this notice, Guru Gobind Singh rebukes Aurangzeb for his weaknesses as a human being and for excesses as a leader. Guru Ji also confirms his confidence and his unflinching faith in the Almighty even after suffering extreme personal loss of his Father, Mother, and all four of his sons to Aurangzeb's tyranny. Guru ji invited Aurangzeb to meet him in Kangar village near Bathinda (Punjab) and said no need to worry as Brar tribe will not harm him (Aurangzeb) as they are under his command. On the way, there will be no danger to your life, For, the whole tribe of Brars accepts my command. (59)

Of the 111 verses, the maximum numbers of 34 verses are to praise God; 32 deal with Aurangzeb’s invitation for the Guru to meet him and the Guru's refusal to meet the Emperor – instead the Guru asks Aurangzeb to visit him; 24 verses detail the events in the Battle of Chamkaur, which took place on 22 December 1704; 15 verses reprove Aurangzeb for breaking promise given by him and by his agents to the Guru; In verses 78 and 79, Guru Gobind Singh had also warned Aurangzeb about the resolve of the Khalsa not to rest till his evil empire is destroyed; 6 verses praise Aurangzeb.

Guru Gobind Singh wrote this letter from village Dina in Malwa region of the Punjab. Guru Gobind Singh spent few days at Dina and then moved to Dod, Kotkapura, Dhilwan Kalan, Jaitu, Muktsar, Lakhi Jangal, and Damdama Sahib. Guru Gobind Singh's last fight with Mughal Army happened at Khidrane Di Dhaab now called Sri Muktsar Sahib.