Mark Nash may refer to:
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Mark Nash (basketball) (born 1976), Australian basketball player
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Mark Nash (murderer) (born c. 1972), Irish serial killer
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Mark Nash (musician) PFR may refer to:
Science and technology
* Plug flow reactor model, a reactor simulation model
* Prototype Fast Reactor, a nuclear reactor at Dounreay
* PFR, Phosphate Flame Retardant, a type of Flame Retardant
* pFR, a form of the light-sensing pi ...
(fl. 1980s–2020s), drummer for Christian rock band PFR
{{hndis, Nash, Mark