SEOUL, South Korea (AP) _ Two U.N. organizations have filed a complaint with a state tobacco company for using the world body's emblem to promote cigarettes, officials said today.

Officials at the Korea Tobacco and Ginseng Corp. said they have received a complaint from the World Health Organization and the U.N. Children's Fund about the U.N. emblem printed on packs of cigarettes.

The corporation manufactured and sold 10 million packs of low-tar cigarettes, called ''88 Light,'' bearing the U.N. emblem, to commemorate South Korea's admission to the United Nations this week.

South Korea is expected to be formally admitted to the United Nations on Tuesday along with rival North Korea. The admission will accomplish one of South Korea's longstanding diplomatic goals.

The controversial cigarettes were put on sale last week and are believed to have been sold out, the official said on condition of anonymity. He said 10 million packs amounts to a one-day sale.

The official said his corporation did not know of the restrictions on using the U.N. emblem.

The Seoul government issues special postage stamps and cigarettes to commemorate visits of foreign heads of states or other important international meetings or occasions that involve South Korea.