In 1900, rugby union first appeared at the Summer Olympic Games in Paris.
In 1906, the Webb Ellis Cup was created by Garrard's Crown Jewellers.
In 1908, rugby union was played at the Summer Olympic Games in London.
In 1910, France joined the Home Nations Championship, expanding it to the Five Nations.
In 1920, rugby union was played at the Summer Olympic Games in Antwerp.
In 1924, rugby union was played at the Summer Olympic Games in Paris. Rugby union ceased to be on Olympic program after this date.
In 1983, the Australian Rugby Union independently proposed the establishment of a world cup.
In 1984, the New Zealand Rugby Union independently proposed the establishment of a world cup.
In 1985, a proposal to the IRFB passed 10-6 for the establishment of a world cup.
In June 1987, the inaugural Rugby World Cup was held, co-hosted by Australia and New Zealand, with sixteen nations taking part.
In 1987, New Zealand All Black Grant Fox set the record for most points in a single Rugby World Cup competition, scoring 126 points.
In 1987, sixteen teams participated in the Rugby World Cup tournament.
In 1987, the Webb Ellis Cup was chosen for use in the competition.
In 1987, the first Rugby World Cup was held, co-hosted by New Zealand and Australia.
In 1987, the inaugural Rugby World Cup tournament had cumulative worldwide television audiences of 300 million.
In 1991, Jason Leonard of England began his record-setting World Cup appearances.
In 1991, the Rugby World Cup tournament had cumulative worldwide television audiences of 1.75 billion.
Since 1991, Japan had not won a single World Cup match until 2015.
In 1992, eight years after their last official series, South Africa hosted New Zealand in a one-off test match.
In 1995, All Black Marc Ellis set the record for most tries in a single match with six tries.
In 1995, New Zealand's Jonah Lomu became the youngest player to appear in a World Cup final at 20 years and 43 days old.
In 1995, South Africa hosted the Rugby World Cup and defeated New Zealand in the final, winning the tournament. Nelson Mandela presented the trophy to South Africa's captain, Francois Pienaar.
In 1995, sixteen teams participated in the Rugby World Cup tournament.
In 1995, the All Blacks set a record by scoring 145 points against Japan.
In 1995, the Rugby World Cup tournament had cumulative worldwide television audiences of 2.67 billion.
The sport turned professional after 1995.
In 1999, South Africa's Jannie de Beer kicked five drop-goals against England, setting a single World Cup match record.
In 1999, the Millennium Stadium was built purposely for the tournament.
In 1999, the Rugby World Cup expanded to twenty teams.
In 1999, the Rugby World Cup tournament had cumulative worldwide television audiences of 3 billion.
In 1999, the Rugby World Cup tournament was hosted by Wales with matches also being held throughout the rest of the United Kingdom, Ireland and France. The number of participating nations was increased from sixteen to twenty.
Wales hosted in 1999.
In 2003, Australia achieved the widest winning margin of 142 points in a match against Namibia.
In 2003, Jason Leonard of England played his final World Cup match, tying the record with Richie McCaw of 22 World Cup matches.
In 2003, the Rugby World Cup tournament had cumulative worldwide television audiences of 3.5 billion.
In 2003, the qualifying format allowed eight positions to be automatically filled by the quarter-finalists of the previous tournament, with the remaining positions filled by continental qualifying tournaments.
In 2003, there were a number of remarkably lopsided results. Australia's 142–0 win over Namibia stands as the most lopsided score in Rugby World Cup history.
In November 2005, New Zealand was awarded the 2011 Rugby World Cup tournament, ahead of bids from Japan and South Africa.
In 2007, Bryan Habana equaled the record for most tries in a tournament, scoring 8 tries.
In 2007, South Africa won their second Rugby World Cup title, defeating England 15-6.
In 2007, the Rugby World Cup tournament had cumulative worldwide television audiences of 4 billion.
In 2007, the qualifying format allowed eight positions to be automatically filled by the quarter-finalists of the previous tournament, with the remaining positions filled by continental qualifying tournaments.
In 2011, Eden Park was upgraded for the tournament.
In 2011, New Zealand won the Rugby World Cup, defeating France in the final with a narrow 8-7 victory.
In 2015, England became the first solo host nation to be eliminated at the pool stages.
In 2015, Japan defeated South Africa in the opening weekend of the tournament, generating the biggest upset in Rugby World Cup history. New Zealand won the final against Australia.
In 2015, Julian Savea equaled the record for most tries in a tournament, scoring 8 tries.
In 2015, Richie McCaw tied the record for most World Cup appearances.
In 2015, the World Cup Final was commemorated with a 24-carat gold-plated Rugby World Cup final match ball, made by Web Ellis Cup custodians, Thomas Lyte.
In 2019, Japan hosted the Rugby World Cup, the first time the tournament had been held outside the traditional rugby strongholds.
Starting in 2021, gender designations were removed from the titles of the men's and women's World Cups.
Starting in 2021, the women's equivalent tournament was officially renamed the Rugby World Cup.
In 2022, the women's tournament was held in New Zealand, which retained its original title of "Rugby World Cup 2021" despite having been delayed.
As of the 2023 World Cup, 26 nations have qualified to compete across 10 tournaments.
At the end of the 2023 World Cup, World Rugby announced that all preceding tournaments would include the words "Men's" or "Women's" in their titles.
In 2023, South Africa defeated New Zealand in the final to win the tournament and become the current champion.
In 2023, Will Jordan equaled the record for most tries in a tournament, scoring 8 tries.
In 2023, the tournament achieved 1.33 billion viewing hours across all programming, making it the most viewed rugby event of all time.
In 2025, the first Women's Rugby World Cup will be held with "Women's" included in its title.
In 2027, the Rugby World Cup will expand to twenty-four teams when it is held in Australia.
In 2027, the first Men's Rugby World Cup will be held with "Men's" included in its title.
In 2031, the United States will host the tournament.