David Samuel Weaver (born 8 January 1942) is a Welsh former international rugby union player.
A product of Glynneath RFC, Weaver won a solitary Wales cap in his first season with Swansea. He played the 1964 Five Nations tournament opener for Wales against England at Twickenham, which finished in a draw.
Weaver was in the Swansea side that beat the touring 1966âÂÂ67 Wallabies and later represented Zambia.