Saudi Arabia has imposed a near total blockade on a country heavily reliant on imports.
The call came from UN humanitarian affairs chief, Stephen O’Brien, who said that millions of Yemenis face famine because food aid is not reaching them.
According to UN records, Saudi attacks have killed more than 2,600 people and injured at least 11,000 in Yemen.
Countless others are dying because hospitals are closing down due to fuel shortages, it added.
A Saudi-led coalition, backed by the United States, has been carrying out airstrikes against Yemen since March. The airstrikes have not been authorized by the UN.
According to UN records, the Saudi attacks have killed more than 2,600 people and injured at least 11,000 since the military aggression began against Yemen on March 26.