Nasrallah's death nearly five months ago in a huge Israeli strike on Beirut's southern suburbs left Hezbollah supporters in disbelief and sent shockwaves across Lebanon and the region.
Norway-based Iran Human Rights (IHR) and French group Together Against the Death Penalty (ECPM) said the figure was the highest since IHR began recording executions in Iran in 2008.
Iran strongly condemned on Thursday an "insulting" poster on a bus in a French city depicting supreme leader Ayatollah Ali Khamenei, state media reported, with relations strained between the two countries.
