Japan will freeze the assets of 25 more Russian citizens and ban exports to 81 Russian organizations, the country's Ministry of Finance said in a news release on Friday.
It brings the total number of Russians targeted by Japan's asset freezes to 101 people.
Targets of the new sanctions include Igor Shuvalov, a former Russian deputy prime minister and chairman of major state-owned bank Vnesheconombank, and five of oligarch Sergey Chemezov's relatives, according to Japan's Finance Ministry.
The export of luxury goods will also be banned, the ministry said.
Tokyo has unveiled a raft of punitive measures against Moscow in recent weeks. The latest sanctions come as Japanese Prime Minister Fumio Kishida pledged on Wednesday to unveil more support for Ukraine at the G7 summit in Brussels.