2019 in rugby union
;International competitions
;National teams
- September 28, 2018 – June 15, 2019: ///// 2018–19 Rugby Europe Trophy
- * Final Ranking: 1., 2., 3., 4., 5., 6.
- October 13, 2018 – June 1, 2019: 2018–19 Rugby Europe Conference
- * Conference 1 North Final Ranking: 1., 2., 3., 4., 5.
- * Conference 1 South Final Ranking: 1., 2., 3., 4., 5.
- * Conference 2 North Final Ranking: 1., 2., 3., 4., 5.
- * Conference 2 South Final Ranking: 1., 2., 3., 4., 5.
- February 1 – March 15: ///// 2019 Six Nations Under 20s Championship
- * Champions: ; Second: ; Third: ; Fourth: ; Fifth: ; Sixth:
- February 1 – March 16: ///// 2019 Six Nations Championship
- * Champions: ; Second: ; Third: ; Fourth: ; Fifth: ; Sixth:
- February 1 – March 17: ///// 2019 Women's Six Nations Championship
- * Champions: ; Second: ; Third: ; Fourth: ; Fifth: ; Sixth:
- February 2 – March 9: ///// 2019 Americas Rugby Championship
- * Champions: ; Second: ; Third: ; Fourth: ; Fifth: ; Sixth:
- February 9 – March 17: ///// 2019 Rugby Europe Championship
- * Champions: ; Second: ; Third: ; Fourth: ; Fifth: ; Sixth:
- May 18 – June 29: // 2019 Asia Rugby Championship
- * Champions: ; Second: ; Third:
- June 4 – 22: 2019 World Rugby Under 20 Championship
- * defeated, 24–23, to win their second consecutive World Rugby Under 20 Championship title.
- * took third place.
- June 29 – September 21: /// 2019 Victoria Cup
- * Champions: ; Second: ; Third: ; Fourth:
- July 20 – August 10: /// 2019 Rugby Championship
- * Champions: ; Second: ; Third: ; Fourth:
- July 28 – August 3: // 2019 West African Series
- * Champions: ; Second: ; Third:
- September 20 – November 2: 2019 Rugby World Cup in
- * defeated, 32–12, to win their third Rugby World Cup title.
- * took third place.
- November 18 – 30: 2019 Oceania Rugby Women's Championship in
;Club teams
- August 31, 2018 – May 25, 2019: //// 2018–19 Pro14
- * Leinster defeated Glasgow Warriors, 18–15, to win their second consecutive and sixth overall Pro14 title.
- August 31, 2018 – June 1, 2019: 2018–19 Gallagher Premiership
- * Saracens F.C. defeated fellow English team, Exeter Chiefs, 37–34, to win their second consecutive and fifth overall Premiership Rugby title.
- October 12, 2018 – May 10, 2019: 2018–19 European Rugby Challenge Cup
- * Clermont defeated fellow French team, La Rochelle, 36–16, to win their third European Rugby Challenge Cup title.
- October 12, 2018 – May 11, 2019: 2018–19 European Rugby Champions Cup
- * Saracens F.C. defeated Leinster, 20–10, to win their third European Rugby Champions Cup title.
- October 13, 2018 – May 10, 2019: 2018–19 European Rugby Continental Shield
- * Both Enisey-STM and Calvisano have qualified to compete at the 2019–20 European Rugby Challenge Cup.
- November 9, 2018 – May 4, 2019: 2018–19 RFU Championship Cup in and Jersey
- * The Ealing Trailfinders defeated the London Irish, 23–17, to win the inaugural RFU Championship Cup title.
- January 26 – June 16: / 2019 Major League Rugby season
- * The Seattle Seawolves defeated a fellow American team, the San Diego Legion, 26–23, to win their second consecutive Major League Rugby title.
- February 14 – July 5: //// 2019 Super Rugby season
- * The Crusaders defeated the Jaguares, 19–3, to win their third consecutive and tenth overall Super Rugby championship title.
- August 31 – October 26: / 2019 National Rugby Championship
- * The Western Force defeated the Canberra Vikings, 41–3, to win their first National Rugby Championship title.