Wanzai County (simplified Chinese: 万载县; traditional Chinese: 萬載縣; pinyin: Wànzài Xiàn) is a county under the administration of the prefecture-level city of Yichun in the northwest of Jiangxi province, China, bordering Hunan province to the west.

It could also mean"10,000 loads" and could likely be related to its past importance as a center of trade.

Today it a small city with major industries including fireworks manufacturing and rice liquor distillation.

Its position along the 320 National Highway has helped insure steady economic growth and better access to Pingxiang and Yichun in the west and Nanchang in the north.

This mountainous region of Jiangxi is home to many different dialects of the Gan Chinese language.