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.
Acting in parallel, Britain also announced fresh sanctions against Iran on Monday, freezing the assets of Islamic Republic of Iran Shipping Line (IRISL).