David Moore (23 April 1808 – 9 June 1879) was a Scottish botanist. Norman Moore writing in the Dictionary of National Biography reports that he was originally David Muir, changing the spelling when he moved to Ireland.
Born at Dundee on 23 April 1808, Moore originally worked as a gardener. In 1828 he migrated to Ireland and became assistant to James Townsend Mackay in the Dublin University botanic garden. In 1838 he was appointed director of the Royal Dublin Society's botanic garden at Glasnevin, County Dublin.
Moore died at Glasnevin, 9 June 1879.
Moore published papers in The Phytologist, in the Natural History Review, in the Dublin University Zoological and Botanical Proceedings, in Leeman's Journal of Botany, in the Proceedings of the Royal Irish Academy, and in other periodicals. He worked mainly on mosses and hepaticæ, and published in 1873 a Synopsis of Mosses, and in 1876 a Report on Hepaticæ (Proceedings of Royal Irish Academy).
In 1866 Moore published, with Alexander Goodman More, Contributions towards a Cybele Hibernica, being Outlines of the Geographical Distribution of Plants in Ireland. It was begun in 1836, when he investigated in the field the flora of the counties of Derry and Antrim for the Ordnance Survey. His final work was a description of a new species of Isoetes, which he named Isoetes morei after his friend More (Journal of Botany, 1878, p. 353).