Deucha is a village and a gram panchayat in Mohammad Bazar CD Block in Suri Sadar subdivision of Birbhum district in the Indian state of West Bengal.

According to a 1845 government data, there had 30 chullis i.e. iron melting furnaces existed at Deucha. In 1855, Mackcey and Co. established Birbhum Iron Works Company and in 1875 Messers Burn and co. had done the same job there. There are many old decorated bricks found every where, which shows old glory of Deucha.

Salui is a Hindu workers caste who are living at Deucha. Saluis were the head of 'saal' i.e. home-made iron-furnace. Sontsaal is a nearby village where Muslim 'saal' workers had lived.

At the time of King Ram Pal, Deucha was under 'Kujabati' state.

Deucha consists of a gram panchayat, 'Deucha Gram Panchayat'. The name Deucha is a mysterious word. Deucha has its burnt soil and a lot of signs of previous iron ore melting industry.

The village is situated near the Dwarka River. An eco park is situated at Deucha on the bank of Dwarka River near Sahapara. Deucha barrage is situated on the Dwarka river with a capacity of 1,400 acre-feet (1,700,000 m³).

As per the 2011 Census of India, Deucha had a total population of 1,772 of which 894 (50%) were males and 878 (50%) were females. Population below 6 years was 266. The total number of literates in Deucha was 1,066 (70.78% of the population over 6 years).

Deucha Pachami coal block is to be developed by Bengal Birbhum Coal Company Limited.