Hammad ibn Abi Sulayman (Arabic: حماد بن أبي سليمان, romanized: Ḥammād ibn Abī Sulaymān; died 737–8) was an early Kufan Muslim jurist who is best known for being the principal teacher of Abu Hanifa, the eponym of the Hanafi school of law.

[2] He began issuing legal verdicts during al-Nakha'i's lifetime and inherited his halaqa (study circle) following his death in 714.

[2] The jurisprudence of Hammad focused on ra'y and understanding the underlying causes ('illah) of rulings, following al-Nakha'i in this regard.

[1] The isnad of Abu Hanifa – Hammad – al-Nakha'i is regarded as the "golden Kufan chain".

[2] Abu Hanifa led his halaqa thereafter,[1] and named his son Hammad in tribute to his teacher.