Two Palestinian cameramen were killed and at least 10 media personnel were wounded in the offensive, which was launched after weeks of rocket attacks on Israel. The Israeli government says each of the targets was a legitimate military objective.
A statement released Thursday by the New York-based rights group says it found no indications that these targets were valid military objectives.
Sarah Leah Whitson, the Mideast director at HRW, says that "just because Israel says a journalist was a fighter or a TV station was a command center does not make it so."
The Israeli military had no immediate comment on the report.