Louis Augustus Phillips (24 February 1878 – 14 March 1916) was a Welsh rugby player, who played half-back for Newport RFC, and won four caps for Wales.

Nevertheless, Phillips was one of four new players in the team to 'make an impact', alongside George Boots, Jehoida Hodges and Reg Skrimshire.

[2][4] Phillips and Lloyd were thought of as a pair, both playing along similar lines and sharing the work of scrum-half and outside-half.

[6] Phillips and Lloyd were adjudged to be the half-back pair of the season at both club and international level, even if there were some more brilliant individuals.

'[8] Phillips, who was a strong runner and tackled well, made his international debut for Wales against England on 6 January 1900 at Gloucester.

[1] During the game, which Wales won 3–13, Phillips displayed 'special smartness' and used 'the acme of judgment' in his first international appearance, proving also to be a 'splendid defender'.

[11] Phillips missed the opening match of the 1901 international season against England due to an injury to his knee: he was replaced at the last moment by Bala Jones of Aberavon RFC.

[12][13] Thinking that he had recovered, Phillips was back for the following match, against Scotland on 9 February at Inverleith, but within ten minutes he was almost helpless.

'[4][14] The Scottish half-backs, Jimmy Gillespie and Frank Fasson, outplayed Lloyd and Phillips, and prevented the Welsh backline from receiving much ball.

[21] At the start of the First World War, Phillips enlisted in the 20th (Service) Battalion Royal Fusiliers, and after refusing a commission, served as a Sergeant.