|Prince of Wales Trophy|
|Given for||Eastern Conference playoff champions of the National Hockey League|
|First award||1925–26 NHL season|
|First winner||Montreal Canadiens|
|Most wins||Montreal Canadiens (25)|
|Most recent||Tampa Bay Lightning (3)|
The Prince of Wales Trophy, also known as the Wales Trophy, is an award presented by the National Hockey League (NHL) to the Eastern Conference (formerly the Wales Conference) playoff champions, prior to the final series of games for the Stanley Cup. Named for Prince Edward, Prince of Wales (later King Edward VIII and then Duke of Windsor), the trophy was first presented in the 1925–26 NHL season to the champion of the first game in Madison Square Garden and then subsequently presented to the champion of the NHL playoffs (including the previous two seasons). However, the trophy has been awarded for eight different accomplishments throughout its history, including for the American Division regular season champions, the NHL regular season champions, the East Division season champions, the Wales Conference regular season champions, the Wales Conference playoff champions, and the Eastern Conference playoff champions. The current holders of the Prince of Wales Trophy are the Tampa Bay Lightning, after defeating the New York Islanders in the 2020 Eastern Conference Finals.
The Prince of Wales Trophy was first announced in December 1925. It was sponsored by the then Prince of Wales, Prince Edward, and thus bore the Prince of Wales' feathers and the shield of the Royal Coat of Arms of Canada. Costing $2,500, the trophy was said to be in the possession of the league champion. It was originally awarded to the winner of the first game played in Madison Square Garden, held on December 15, 1925 (Montreal Canadiens 3 at New York Americans 1). The award was then held by the Canadiens until the end of the season. The Canadiens engraved their name on the trophy twice, for the 1924–25 season, and the preceding 1923–24 season, for which the team was league champions.
It was then awarded to the NHL playoff champion in 1925–26 and 1926–27, (along with the O'Brien Cup) before that team would go on to face the Western Hockey League (WHL) champion for the Stanley Cup at the end of those seasons. From the 1927–28 season on, the trophy was awarded to the champion of the American Division of the NHL, while the O'Brien Cup was presented to the Canadian Division champion, until 1938, when, after the NHL reverted to a single division, the Wales Trophy was made the award for the overall regular season champion.
With the expansion of the NHL in 1967, and the creation of the West Division, the Wales Trophy was given to the team that finished in first place in the East Division, during the regular season. When the league formed two conferences in 1974, the trophy transferred to the team that finished with the best regular season record in the Wales Conference, until 1981. The NHL changed its playoff format so that the two conference playoff champions would meet for the Stanley Cup. The Prince of Wales Trophy was presented to the Wales Conference playoff champions. In the summer of 1993 Wales Conference was renamed the Eastern Conference. Prince of Wales trophy has been awarded to the Eastern Conference playoff champions since the 1993–94 season.
A superstition that is prevalent among many of today's NHL players is that no player should either touch or hoist the Wales (Eastern Conference champion) or Clarence S. Campbell (Western Conference champion) Trophies after they have won the conference playoffs; these players feel that the Stanley Cup is the true championship trophy and thus it should be the only trophy that they should be hoisting. Instead of touching the conference trophy, the captain of the winning team merely poses (usually looking solemn) with the trophy, and sometimes, the entire team poses as well. However, there have been other teams who have ignored the superstition and hoisted the conference trophies, sometimes going on to win the Cup anyway. Most recently, the Tampa Bay Lightning embraced the Wales trophy and went on to win the Stanley Cup.  
The NHL abolished the conferences and re-aligned the league into four new divisions for the 2020–21 NHL season due to the COVID-19 pandemic. As a result, the semifinal round of the 2021 Stanley Cup playoffs will be contested between the winners of the divisional playoffs and they will be seeded according to their regular season record. The status of the conference championship trophies for the 2020–21 season, including whether they will still be awarded to the Stanley Cup finalists (and, if so, how it will be determined which team is to be awarded the Campbell Bowl and which team the Wales Trophy) has not yet been confirmed by the league.
- * Defunct team
- ^ = Year clinched to lead years won
- ¤ = Year clinched to lead years consecutively won
- † = Eventual Stanley Cup champions
- a = Engraved in 1925–26.
- December 15, 1925 – Montreal Canadiens (Canadiens 3, New York Americans 1)
1923–1925 (pre-donation) engravings
The Canadiens were league champions for these seasons.
|1923–24||Montreal Canadiens †a||1|
NHL playoff champions (1925–1927)
|1925–26||Montreal Maroons * †||1|
|1926–27||Ottawa Senators (original)[nb 1] *†||1|
American Division regular season champions (1927–1938)
|1928–29||Boston Bruins †||2|
|1931–32||New York Rangers||1|
|1933–34||Detroit Red Wings †||1|
|1935–36||Detroit Red Wings †||2|
|1936–37||Detroit Red Wings †||3|
Regular season champions (1938–1967)
|1938–39||Boston Bruins †||8|
|1940–41||Boston Bruins †||10|
|1941–42||New York Rangers||2|
|1942–43||Detroit Red Wings †||4|
|1943–44||Montreal Canadiens †||3|
|1945–46||Montreal Canadiens †||5|
|1947–48||Toronto Maple Leafs †||1|
|1948–49||Detroit Red Wings||5|
|1949–50||Detroit Red Wings†||6|
|1950–51||Detroit Red Wings||7|
|1951–52||Detroit Red Wings †||8|
|1952–53||Detroit Red Wings||9|
|1953–54||Detroit Red Wings ¤ †||10|
|1954–55||Detroit Red Wings †||11|
|1955–56||Montreal Canadiens †||7|
|1956–57||Detroit Red Wings||12|
|1957–58||Montreal Canadiens †||8|
|1958–59||Montreal Canadiens †||9|
|1959–60||Montreal Canadiens †||10|
|1962–63||Toronto Maple Leafs†||2|
|1964–65||Detroit Red Wings||13|
|1965–66||Montreal Canadiens †||14|
|1966–67||Chicago Black Hawks||1|
East Division regular season champions (1967–1974)
|1967–68||Montreal Canadiens †||15|
|1968–69||Montreal Canadiens †||16|
|1969–70||Chicago Black Hawks||2|
|1971–72||Boston Bruins †||12|
|1972–73||Montreal Canadiens ^ †||17|
Wales Conference regular season champions (1974–1981)
|1975–76||Montreal Canadiens †||18|
|1976–77||Montreal Canadiens †||19|
|1977–78||Montreal Canadiens †||20|
|1978–79||Montreal Canadiens †||21|
Wales Conference playoffs champions (1981–1993)
|1981–82||New York Islanders †||1|
|1982–83||New York Islanders †||2|
|1983–84||New York Islanders||3|
|1985–86||Montreal Canadiens †||23|
|1990–91||Pittsburgh Penguins †||1|
|1991–92||Pittsburgh Penguins †||2|
|1992–93||Montreal Canadiens †||25|
Eastern Conference playoffs champions (1993–present)
|1993–94||New York Rangers †||3|
|1994–95||New Jersey Devils †||1|
|1999–2000||New Jersey Devils †||2|
|2000–01||New Jersey Devils||3|
|2002–03||New Jersey Devils †||4|
|2003–04||Tampa Bay Lightning †||1|
|2004–05||No winner because of the 2004–05 NHL lockout||Season canceled|
|2005–06||Carolina Hurricanes †||2|
|2008–09||Pittsburgh Penguins †||4|
|2010–11||Boston Bruins †||16|
|2011–12||New Jersey Devils||5|
|2013–14||New York Rangers||4|
|2014–15||Tampa Bay Lightning||2|
|2015–16||Pittsburgh Penguins †||5|
|2016–17||Pittsburgh Penguins †||6|
|2017–18||Washington Capitals †||2|
|2019–20||Tampa Bay Lightning †||3|
- Refers to the original Ottawa Senators NHL franchise (1917–1934)
- NHL.com. "Prince of Wales Trophy".
- "Prince of Wales Sponsors New Cup: Trophy Costing $2,500 Will Be Emblematic of National Hockey League Title". New York Times. December 7, 1925. p. 26.
- McCarthy, Dave, ed. (2008). The National Hockey League Official Guide & Record Book 2009. Dan Diamond & Associates, Inc. p. 241.
- "New York Beaten by Canadiens 3–1". The Globe. December 16, 1925. p. 10.
- Legends of Hockey.net. "History of the Prince of Wales Trophy". Archived from the original on 2007-09-29.
- Kaplan, Emily (2011-05-28). "Conference trophies: to touch, or not to touch?". NHL.com. Retrieved 2011-11-12.
- Coffey, Phil (2006-06-02). "NHL.com - Ice Age: Having another trophy in mind". Retrieved 2006-07-25.[dead link]