"I am honoured to be part of this touring team and grateful to Tennis South Africa and the ITF for nominating me and giving me the opportunity," Montgomery said.
"Being part of a professional team with top class coaches will enable me to give of my very best and I hope to do myself and South Africa proud when touring Europe."
The 17-year-old reached the quarterfinals of the 2012 junior US Open and the last eight of this year's junior Australian Open.
Also named in the nine-strong international team were 2013 U13 African Junior Champion Sandra Samir of Egypt, Peru Davis Cup player Jorge Panta and Camila Giangreco Campiz of Paraguay , who made her Fed Cup debut in February.
Starting next week, the team would travel to tournaments on the ITF circuit in Italy, Belgium, France, Germany and the United Kingdom –including the junior championships of Roland Garros and Wimbledon.
The ITF also awarded African Junior Champion Ilze Hattingh and South African Fed Cup player Lynn Kiro a travel grant from the ITF/GSDF which would enable both players to travel to Europe and play in the Junior French Open and Junior Wimbledon Championships.
In addition, two top South African junior players, Richard Thongoana of Johannesburg and Lee Barnard of Pretoria, were selected as part of the ITF/Confederation of African Tennis (CAT) 14-and-under team to participate in a series of five tournaments on the European 14-and-under circuit in July and August.
Cape Town junior Lloyd Harris was also invited by the ITF/CAT and GSDF to join the African 16-and-under team to participate in the North African 18-and-under junior circuit in June and July. The team would be coached by KwaZulu Natal's Jared Temlett.