Abdullah Nizamani is a Barrister-at-Law based in Karachi, Pakistan, with an experience of more than 15 years. He holds LLM from BPP University, London, and is a member of the Honourable Society of Lincoln’s Inn.

Apart from his regular practice, he is often engaged by the High Court of Sindh to represent paupers appellants on state expenses and lo bono basis. He is also associated with Digital Rights Foundation's pro bono project "Ab Aur Nahin", which helps journalists who face state's wrath in false cases misusing cyber law and women who are survivors of gender based violence. Mr. Nizamani provides free legal advice to them and offers pro bono and lo bono legal representation in courts.

Abdullah Nizamani is an advocate of marginalised communities and religious minorities. He writes on their plight in the newpapers and online platforms. He has also represented people from religious minorities in the High Court of Sindh.

The notable cases include Har Lal's case in which Abdullah Nizamani appeared as co-counsel along with Barrister Yasser Latif Hamdani. The case related to an arbitrary clause in the National Identification Card form, which required the religious minorities to sign a negative declaration saying that they are not Muslims despite mentioning their religion. The Har Lal case was vigorously pursued by Barrister Hamdani and Barrister Nizamani. After lenghty litigation, the High Court allowed the petition, declared the discriminatory clause illegal, and directed the National Database and Registration Authority (NADRA) and federal ministry of Interior Affairs to redesign the identification card form. The case has been reported in the Pakistan Law Digest - a leading and authoritative law journal.