The Kasaudhan (sometimes pronounced Kasaundhan) are a Hindu caste found in the states of Bihar, Madhya Pradesh and Uttar Pradesh in India. Their Gotra is Kashyap made after rishi Kashyapa, hence they use surname as 'Kashyap' or 'Kasaudhan' or 'Gupta'. They are part of Bania (caste) community.
The name Kasaudhan is said to be derived from the words kaansa ("bell-metal") and dhana ("wealth"). They are divided into the Teen, Terah, Sath and Eksath groups.
In Uttar Pradesh and Bihar, the Kasaudhan claim to have originated from Kashmir, and settled in Uttar Pradesh, Bihar, Madhya Pradesh and other places during the period of the Mughal Empire. They are found mainly in the districts of Varanasi, Sultanpur, Gorakhpur, Faizabad, Basti ,Gonda, Balrampur, Bahraich, Shravasti in UP, Bhagalpur and Munger in Bihar and many more districts in India . The Kasaudhan of UP and Bihar speaks Hindi and Angika language mainly.
In early times Kasaudan were primarily farmers, landowners and shop-owners. But now in modern time Kasaudhan Samaj has shown very good progress in every field, especially academic.
In Uttar Pradesh and Bihar, many Kasaudhan were landowners, but now there is a growing urbanization. Many are now petty businessmen, trading in spices, grocery and hardware. The new generation of Kasaudhan Samaj are doing very well in studies too, graduating from top university like BHU,IIT and IIM.