Alex Chiasson (/ˈtʃeɪsɔːn/ CHAY-sawn, French pronunciation: [alɛks ʃjasɔ̃], born October 1, 1990) is a Canadian former professional ice hockey forward.

He has previously played in the National Hockey League (NHL) for the Dallas Stars, Ottawa Senators, Calgary Flames, Washington Capitals, Edmonton Oilers, Vancouver Canucks and Detroit Red Wings.

He was assigned to their American Hockey League (AHL) affiliate, the Texas Stars, where he finished the rest of the season playing in nine games, scoring one goal and five points.

[6] In 2013–14, his first full season with the Stars, he marked his first three-point game on October 24, scoring two goals and adding an assist in a 5–1 victory over the Calgary Flames.

[15] Chiasson finished tied for fourth in regular season team scoring, registering 13 goals and 35 points in 79 games.

He opened the scoring in the first period with the Stars on the power play, taking a pass from Benn to beat Frederik Andersen.

[6] Chiasson was involved in a blockbuster trade on July 1, 2014, being dealt to the Ottawa Senators along with Alex Guptill, Nick Paul, and a second round pick in the 2015 NHL entry draft in exchange for star forward Jason Spezza, and Ludwig Karlsson.

The Senators made him a qualifying offer to retain his NHL rights and, on July 5, 2015, Chiasson filed for salary arbitration.

[29] On September 9, 2017, the Washington Capitals signed Chiasson, then an unrestricted free agent, to a professional tryout (PTO).

[32] He registered his first point with the Capitals on October 20, assisting on Jay Beagle's shorthanded goal in a 4–3 overtime win over the Detroit Red Wings.

[36] They moved on to face the Pittsburgh Penguins in the second round, where Chiasson scored his first playoff goal for Washington in the Game 6 Capitals 2–1 victory.

The win eliminated the Penguins and the Capitals moved on to face the Tampa Bay Lightning in the Eastern Conference Final.

[37] In the conference final, Chiasson recorded one assist, setting up Devante Smith-Pelly's second period goal in the Capitals Game 2 6–2 victory.

[43] With the Oilers, Chiasson set a new career high for most goals in a season, scoring his 14th on December 14, 2018, against Anthony Stolarz of the Philadelphia Flyers in a 4–1 victory.

[6] On October 12, 2021, Chiasson signed a one-year, $750,000 contract with the Vancouver Canucks after a successful try-out in training camp.

[57] In the second game of the season on October 15, he recorded his first goal for the team on the power play and an assist in a 5–4 shootout win over the Philadelphia Flyers.

[58] Chiasson played in a depth forward role with the Canucks, featuring in 67 regular season games for 13 goals and 22 points.

[59] Remaining without a club for the first quarter of the season, Chiasson agreed to join the Detroit Red Wings' AHL affiliate, the Grand Rapids Griffins, on a professional tryout on November 26, 2022.

[60] Chiasson added 20 points through 29 games with the Griffins before he signed a one-year, two-way contract with the Red Wings for the remainder of the season on March 3, 2023.

[6] As a free agent for the third-year running, on August 21, 2023, Chiasson accepted a professional tryout invitation to attend the Boston Bruins training camp.