Daniel Silvan Evans (11 January 1818 – 12 April 1903) was a Welsh clergyman, scholar and lexicographer. Educated at the Independent College in Brecon, Silvan Evans worked as a schoolmaster for five years. On marriage he conformed to the Established Church, studying at St David's College, Lampeter, where he became lecturer in Welsh. Ordained deacon in 1848 and priest the following year he served curacies at Llandegwning parish in Llŷn and from 1852 to 1862 at nearby Llangian, Caernarfonshire. In 1862 he was appointed to the living of Llanymawddwy, Merioneth.