Sir Daniel Mackinnon Hamilton (6 December 1860 – 6 December 1939) was a Scottish businessman who made Bengal his second home.He was the head of the P.and 0. cruise operations in India. He established a zamindari in Gosaba, where he experimented with programmes of rural reconstruction and initiated a co-operative movement to banish moneylenders and rural poverty. He was a visionary and builder of rural reconstruction programmes at a time when the Indian national movement was gaining momentum, and gave importance to rural development and self-help.