Tipu Zahed Aziz (Bengali: টিপু আজিজ জাহেদ; 9 November 1956 – 25 October 2024) was a Bangladeshi-born British professor of neurosurgery at the John Radcliffe Hospital in Oxford, Aarhus Denmark and Porto, Portugal.

He specialised in the study and treatment of Parkinson's disease, multiple sclerosis, dystonia, spasmodic torticollis, fixed abnormal posture of the neck, tremor, and intractable neuropathic pain.

[3] He arrived in Britain at the age of 17 with just three O-levels, but after passing A-levels, he studied Neurophysiology at University College London, where he became interested in deep brain stimulation.

[9] Aziz said that the emphasis of his future research would be upon viral, gene, and stem cell therapy to treat Parkinson's and similar movement disorders.

According to The Oxford Student, Malcolm Macleod, a clinical neuroscientist, was asked by Animal Aid to conduct a systemic review into Aziz's research.

Dr Macleod claimed that he stood by his choice not to do the review "I was not comfortable taking part in a study which was motivated by a desire to undermine Aziz.

"[3] In an interview published on 4 March 2005, Aziz condoned testing cosmetics on animals, a practice banned in the UK since 1998 and fully across the European Union by 2013.

The monkey was shown being "shaped", that is, being encouraged to perform certain tasks by having food and water withheld, in advance of having the symptoms of Parkinson's disease induced.

[7][12] Since the BBC documentary aired, SPEAK, a British animal rights campaign formed in 2002, has used the "Fight for Felix" as a public focus of their efforts to halt the construction of a new £20 million animal-testing facility in South Park Road, Oxford[13] Aziz died from cancer on 25 October 2024, at the age of 67.