Papyrus Oxyrhynchus 234 (P. Oxy. 234 or P. Oxy. II 234) is a fragment of a treatise on medical prescriptions by an unknown author, written in Greek. It was discovered in Oxyrhynchus. The manuscript was written on papyrus in the form of a sheet. It is dated to the second or third century. Currently it is housed in the library of the University of St Andrews in Fife.