More than half of respondents to an NHK survey said Japan should maintain the death penalty.
The telephone survey conducted over the weekend followed the recent executions of all 13 death row inmates linked to the doomsday cult Aum Shinrikyo. Over 1,200 people responded.
Fifty-eight percent of respondents said Japan should keep the death penalty, while 7 percent said the country should abolish it. And 29 percent were undecided.
Respondents were also asked about a proposal to introduce daylight saving time during the 2020 Tokyo Olympics and Paralympics. Its aim is to protect athletes and spectators from the summer heat.
Fifty-one percent said they support the proposal, while 12 percent said they oppose it. Twenty-nine percent were undecided.