Avraham Oppenheim was an early 19th-century Hungarian rabbi who died at the young age of 28. He was the author of Har Evel, on ritual regulations on visiting the sick and mourning customs, and of a treatise entitled Nishmat Chaim, about the immortality of the soul. Both books were published by Oppenheim’s relative, Simon Oppenheim, a rabbinic judge in Budapest.