Papyrus Oxyrhynchus 137 (P. Oxy. 137 or P. Oxy. I 137) is the fifth in a series of Oxyrhynchus papyri (133–139) concerning the family affairs of Flavius Apion, his heirs, or his son. This one is a receipt for a water wheel axle, written in Greek and discovered in Oxyrhynchus. The manuscript was written on papyrus in the form of a sheet. The document was written on 11 January 584. Currently it is housed in the Egyptian Museum (10034) in Cairo.