Reuben Hoshke HaKohen (Sofer) (died April 3, 1673) (Hebrew: אברהם ראובן הכהן סופר) was a Kabalist and rabbi of Prague. "Hoshke," his father's name, is a Polish diminutive for "Joshua," mistaken by G.B. De Rossi (Dizionario, s.v. "Oski, Ruben") and Zunz (Z. G. p. 402) for his family name.
He wrote:
Yalḳuṭ, Re'ubeni, a cabalistic work (an imitation of the Yalḳuṭ Ḥadash) containing a collection of sayings taken from other cabalistic works and arranged in alphabetical order (Prague, 1660)Yalḳuṭ Re'ubeni ha-Gadol, (ילקוט ראובני הגדול) a cabalistic midrash on the Pentateuch arranged according to the order of the parashiyyot (Wilmersdorf, 1681)Dabar Shebi-Ḳedushah, a manual of asceticism and repentance (Sulzbach, 1684)Oneg Shabbat, cabalistic reflections on the Sabbath laws, followed by an appendix entitled Derek Ḳabbalat Shabbat (ib. 1684).