James Lyall (9 April 1827 – 10 September 1905) was a Presbyterian minister in the early days of Adelaide, South Australia.
Lyall was born in Edinburgh the son of James Lyall and his wife Janet Lyall, née Pirrie, and was educated at Edinburgh High School, Glasgow University and Edinburgh University, and for the ministry at the Theological Hall of the United Presbyterian Church. He served as a home missionary in Glasgow, Edinburgh and Alloa for 10 years before being called to Adelaide as a long overdue replacement for Rev. Ralph Drummond at the United Presbyterian Church on Gouger Street.
They sailed to Melbourne aboard Ellen Stuart, arriving on 7 September, and during their enforced stopover he took a couple of services, and arrived in Adelaide aboard Burra Burra by 25 September 1857 and took his first service there on 27 September 1857. The church enjoyed a steady increase in membership numbers.
He applied himself vigorously to his new community, as a founder of the multi-faith City Mission, and Bush Mission Society, and was prominent at official functions of other Protestant denominations. He was active in the Temperance cause, the South Australian Sunday School Teachers' Union,London Missionary Society,British and Foreign Bible Society,Missions for the Heathen,Aborigines' Friends' Association and others. He brought to his congregation influential, wealthy and generous members: W. W. Hughes, John Duncan, David Murray and John Gordon. Mrs. Lyall was also active in temperance and other worthy causes, amongst them the Women's Christian Temperance Union and the Presbyterian Women's Missionary Union in South Australia, of which she was founding president.