The Lee–Lin rivalry was a rivalry between two professional badminton players, Lee Chong Wei and Lin Dan. It is considered among the greatest rivalries in badminton history.

Of their 40 meetings, Lin won the head to head battle by 28–12. They met in the final 22 times, semi-finals 15 times, including twice each in the finals of the Olympic Games and World Championships, which Lin took all the victories. Lin was also better in their 11 meetings in Super Series finals (including Super Series Premier) tournaments, where Lin took 9 of them.

Each athlete has their own successes. Lee won 47 Super Series titles between 2007–2017 and ranked first worldwide for 349 weeks, which included a 199-week streak from 21 August 2008 to 14 June 2012. Lin achieved a "Super Grand Slam" at the age of 28 by winning all 9 premier titles.

Their last meeting was 2018 All England Open, which Lin won, before Lee announced retirement due to nose cancer.

Background Lee and Lin have played a total of 40 times, with Lin having the upper hand in their rivalry with a final head to head record of 28–12. Lee Chong Wei and Lin Dan are by far two of the most dominant players across three generations, and many regard Lin Dan as the greatest of all time, leading to media and players alike to liken the period between 2006 and 2016 as the Lin–Lee era.

As both great athletes, they are noted for their signature playing styles. Lee is famed for his incredible speed, counter-attacking prowess, crouch defence, recovery, deceptive net play and steep, hard-hitting jump smashes. Some have considered the cross-court smash as Lee's favourite shot despite its difficulty to execute. Lin, on the other hand, is famed for his patience, tactical awareness in adjusting to his opponents' style of play, sudden unleashing of huge and especially heavy attacks, sliding defence and all-round court play. Over the years, with the decline of fellow legend Taufik Hidayat and Danish great Peter Gade, Lee and Lin continuously adjusted their game to better suit the playing styles of each other, having already reached a level far beyond everyone else and thus began cementing their duopoly which lasted around a decade. During this time, they often swatted other competitors aside before engaging one another in major tournament finals. This continued until the emergence of eventual two-time world champion and 2016 Olympic champion Chen Long and 2017 world champion Viktor Axelsen as Lin and Lee entered their 30s.

In their homeland, each hold a military rank, with Lee a Commander (Honorary) of the Royal Malaysian Navy Volunteer Reserve unit and Lin a retired Lieutenant colonel in the People's Liberation Army Sports branch, having been promoted from the ranks of Lieutenant commander and Major, respectively, meaning they have the same seniority in terms of military rank. In 2015, Lin Dan announced he was to leave the PLA's Bayi Badminton Club after a 20-year service due to strict military protocols prohibiting him from partaking in any commercial activities.

They have contested in many major tournament finals and are currently the only two badminton men singles players who have contested in two Olympic finals consecutively, which saw Lin triumph both times to become the first man in history to defend his Olympic gold. Lin first won in Beijing 2008 in a one-sided final before the two men clashed once again 4 years later in an unprecedented but widely anticipated repeat final at London 2012. This time around, the match was much closer with Lee drawing first blood before Lin hit back to take the match to a decider. The game swung back and forth with 13 ties, the last one 19–19. Lin Dan then took the next 2 points to win his second Olympic gold. As Lin celebrated, Lee remained motionless and teared up before his coaches consoled him to leave the court. While some people questioned Lee's mental strength at critical matches afterward, such notion was not supported by match results. For example, five times during the Lee–Lin rivalry, the match went to 3 games and was decided by only 2 points in the final game. Lee led Lin 3–2 in such extremely tight contests, the last such match came during their colossal 2016 Summer Olympics semi-final, which Lee won the decider with a score of 22-20.

They have also contested two BWF World Championships finals, one Asian Games final and semi-final, similarly in the Badminton Asia Championships and four All England Open Badminton Championships finals where almost all matches were very close hard-fought three-setters. Their 2011 World Badminton Championship match widely touted as one of the greatest badminton matches of all the time. In the semi-finals of the 2016 Rio Olympics, a match widely touted to be the de facto final for possibly the last Olympic Games of both athletes' careers, Lee won against Lin in his third try on the Olympic stage and became the second shuttler in any discipline of the sport in history to reach 3 consecutive finals after Fu Haifeng who had achieved the feat a day earlier in men doubles. During the decider round with the score tied at 20-20, Lee successfully took the next two points to notch one of his biggest wins against Lin and sank to his knees in celebration. Videos uploaded onto social media captured the overwhelming and emotional response from Malaysians watching throughout the country, further cementing Lee's megastar and hero status in his home country. The two players then exchanged a special moment in their rivalry and exchanged shirts as they exited the court.

Early on in their career, whenever Lin and Lee were to play one another, fans were extremely hostile towards their opposite number, often trading barbs, insults and even expletives. Occasionally, Lee had to remind fans that Lin was a personal friend of his and hoped that his fans would change their attitude towards his arch-rival. Over time, hostility became admiration, hatred became respect as fans realised that what they were witnessing was a once in a generation great sporting rivalry of the highest level and began cheering for both players, most evidently when they played in Malaysia and China. Most evidently, when Lee returned from his 8-month doping suspension to represent Malaysia in the 2015 Sudirman Cup held in Dongguan, China, he was given a rousing ovation when announced onto court to take on Lee Dong-keun. This prompted commentator, Gillian Clark, to quip, "Well listen to the fans here! It isn't a Chinese player, it's Lee Chong Wei!". Lee's coach Tey Seu Bock even labelled their rivalry 'limited-edition'. However, this does not stop some hardcore fans who take every opportunity that arises to disparage Lee's accomplishments and status by comparing the two and will point out the fact that Lee, the perennial World No. 1, has never won an Olympic or world title whilst Lin has won both multiple times. Unfortunately, this usually leads to heated exchanges from both sides of supporters, especially on social media. Level-headed fans will try to calm things down by reminding that this once-in-an-era rivalry has entered its final chapter and everyone should be appreciating what the two men has showcased throughout their storied careers rather than be at loggerheads till the very end. Over the years, both Lee and Lin mentioned numerous times in interviews that they would never have become what they are without the other as their motivation. Nevertheless, the pair are good friends off court, having invited one another to each other's weddings and sharing a mutual love for fast cars and watches. Among the cars that Lee is known to own or have owned include a blue Lamborghini Huracán, blue Range Rover Sport, blue BMW M5, crystal grey Bentley Continental GT, a white Audi R8, a white Ferrari F430, a grey Nissan Skyline GTR, Range Rover Evoque, Range Rover, yellow Lamborghini Aventador and a BMW X6 besides the cars given to him by national automaker Proton, mostly bearing the car plate number of 6, including a 'BMW 6' currently registered to his M5. Lin, on the other hand, has a Porsche Panamera, a grey Aston Martin DBS and also a black Nissan Skyline GTR among his vast collection of supercars.

List of all head-to-head matches No.YearTournamentSeriesRoundWinnerScoreLeeLin12004Thomas Cup Asia PreliminariesFinalLin3–15, 15–13, 15–60122005Malaysia OpenFinalLee17–15, 9–15, 15–91132005Hong Kong OpenSemi-finalsLin15–4, 15–61242006All England OpenSemi-finalsLin15–9, 10–15, 17–141352006Malaysia OpenFinalLee21–18, 18–21, 23–212362006Chinese Taipei OpenFinalLin21–18, 12–21, 21–112472006Macau OpenFinalLin21–18, 18–21, 21–182582006Hong Kong OpenFinalLin21–19, 8–21, 21–162692007Sudirman CupBWF tournamentsGroup stageLee21–17, 21–1736102007China MastersSuper SeriesSemi-finalsLin15–21, 21–14, 21–1537112007Japan OpenSuper SeriesSemi-finalsLee21–19, 21–1547122007Hong Kong OpenSuper SeriesFinalLin9–21, 21–15, 21–1548132008Swiss OpenSuper SeriesFinalLin21–13, 21–1849142008Thomas CupBWF tournamentsSemi-finalsLee21–12, 21–1459152008Olympic GamesMulti-sport eventsFinalLin21–12, 21–8510162008China OpenSuper SeriesFinalLin21–18, 21–9511172009All England OpenSuper SeriesFinalLin21–19, 21–12512182009Swiss OpenSuper SeriesFinalLee21–16, 21–16612192009Sudirman CupBWF tournamentsSemi-finalsLin21–16, 21–16613202009China MastersSuper SeriesSemi-finalsLin22–20, 15–21, 21–7614212010Thomas CupBWF tournamentsSemi-finalsLin21–17, 21–8615222010Japan OpenSuper SeriesFinalLee22–20, 16–21, 21–17715232010Asian GamesMulti-sport eventsFinalLin21–13, 15–21, 21–10716242011Korea OpenSuper Series PremierFinalLin21–19, 14–21, 21–16717252011All England OpenSuper Series PremierFinalLee21–17, 21–17817262011BWF World ChampionshipsBWF tournamentsFinalLin20–22, 21–14, 23–21818272011Hong Kong OpenSuper SeriesSemi-finalsLin21–16, 21–14819282011China OpenSuper Series PremierSemi-finalsLin19–21, 21–12, 21–11820292012Korea OpenSuper Series PremierFinalLee12–21, 21–18, 21–14920302012All England OpenSuper Series PremierFinalLin21–19, 6–2921312012Olympic GamesMulti-sport eventsFinalLin15–21, 21–10, 21–19922322013BWF World ChampionshipsBWF tournamentsFinalLin16–21, 21–13, 20–17923332014Asian GamesMulti-sport eventsSemi-finalsLin22–20, 12–21, 21–9924342015Japan OpenSuper SeriesLast 16Lin21–17, 21–10925352015China OpenSuper Series PremierSemi-finalsLee17–21, 21–19, 21–191025362016Badminton Asia ChampionshipsBAC tournamentsSemi-finalsLee22–20, 15–21, 21–41125372016Olympic GamesMulti-sport eventsSemi-finalsLee15–21, 21–11, 22–201225382017Malaysia OpenSuper Series PremierFinalLin21–19, 21–141226392017Badminton Asia ChampionshipsBAC tournamentsSemi-finalsLin21–13, 21–151227402018All England OpenSuper 1000Quarter-finalsLin21–16, 21–171228

Analysis Comparison by medals TournamentLeeLinGoldSilverBronzeGoldSilverBronzeOlympic Games0000Asian Games00World Championships00World Cup00000Asia Championships0World Junior Championships0000Asia Junior Championships00000

Comparison by titles TournamentLeeLinSuper Series FinalsAll England OpenAustralian Open0Brasil Open0China Masters0Canadian Open0China OpenChinese Taipei OpenDenmark OpenFrench OpenGerman Open0Hong Kong OpenIndia Open0India Satellite0Indonesia Open0Japan OpenKorea OpenMacau OpenMalaysia Masters0Malaysia OpenMalaysia Satellite0New Zealand Open0Philippines Open0Singapore Open0Swiss OpenThailand Open0U.S. Open0Total6551

Notable records Lee is the most successful player during the Super Series era from 2007 to 2017, amassing 47 titles. With the Super Series replaced by the new World Tour tournament system from 2018, Lee's record can no longer be surpassed. He also spent 348 weeks on the top of the world ranking, these including 199 consecutive weeks from August 2008 to June 2012.

In March 2017, Lee became the oldest singles player in the Open era to win the All England Open at the age of 34 years and 142 days.