Sir James Macnabb Campbell (1846–1903) was a Scottish administrator in India and ethnologist. During the 1890s he was a leading figure in the intellectual life of British Bombay.
Born at Partick, Lanarkshire, on 4 October 1846, he was a younger son among the six children of John McLeod Campbell and his wife Mary Campbell. Of his three brothers, the eldest, Donald (d. 1909), was rector of Oakford, Devon.
Campbell was educated at Glasgow Academy and Glasgow University, graduating M.A. in 1866. Passing the Indian Civil Service examination in 1867, he went out to Bombay in November 1869, and served as an assistant collector. Two of his brothers lived with him in Bombay, John McLeod Campbell (d. 1888) of the Bombay civil service, and Robert Story Campbell, a merchant.
From April to August 1877 Campbell was on famine work in the Kaladgi district. From April 1880 to near the close of 1881 he held successively the posts of municipal commissioner of Bombay, under-secretary to government in the political, judicial, and educational departments, and collector of Bombay. Campbell was made C.I.E. in January 1885, and going home on his first furlough in that year was created hon. LL.D. of Glasgow University.
After serving as collector of various districts, Campbell was from November 1891 stationed at Bombay as collector of land revenue, customs, and opium. In 1895 and 1897 he acted also there as commissioner of customs, salt, opium, and . At times he served also as chairman of the port trust.
Campbell was recalled from furlough early in 1897 to aid in measures against the third plague pandemic. In June 1897 he succeeded General Sir William Gatacre as chairman of a new plague committee at Bombay, and was made K.C.I.E.. The committee's measures of sanitation provoked rioting and attacks against officers on plague duty (22 June 1897). There was famine in the country and thousands of refugees in Bombay. Campbell encouraged voluntary co-operation in inspection and other work. In June 1898 the plague administration was restored to the municipality.