David Gallaher (30 October 1873 – 4 October 1917) was an Irish-born New Zealand rugby union footballer best remembered as the captain of the "Original All Blacks"—the 1905–06 New Zealand national team, the first representative New Zealand side to tour the British Isles. Under Gallaher's leadership the Originals won 34 out of 35 matches over the course of tour, including legs in France and North America; the New Zealanders scored 976 points and conceded only 59. Before returning home he co-wrote the classic rugby text The Complete Rugby Footballer with his vice-captain Billy Stead. Gallaher retired as a player after the 1905–06 tour and took up coaching and selecting; he was a selector for both Auckland and New Zealand for most of the following decade.