Throughout the history of gloved boxing styles, techniques and strategies have changed to varying degrees. Ring conditions, promoter demands, teaching techniques, and the influence of successful boxers are some of the reasons styles and strategies have fluctuated.

Boxing styles are primarily defined as a combination of a boxer's offensive strategy, guard or defensive system, stance and action in the ring. Some boxers will change their style depending on who their opponent is, while others will use the same style regardless of their opponent. For example, Floyd Mayweather Jr. is primarily known for his technical defence, orthodox stance, crab style, out-fighting. Yet at times he would switch his style, showboating in the ring, fighting southpaw stance, using a high guard, and fighting on the inside.

A boxer's style often aligns with their physical attributes. For example, a boxer with a long reach is more likely to be an out-fighter, which relies heavily on technical prowess, that uses a long guard style compared to a fighter with a short reach. A fighter that is naturally right handed is also more likely to fight from an orthodox stance compared to a left-handed boxer that is more likely to fight from a southpaw stance. Though, physical attributes alone cannot predict a fighter's style as other factors such as gym culture and their trainer's philosophy also play a role.

Boxing styles Every boxer uses one of the four offensive strategies or styles: Swarmer, Out-Boxer, Slugger and Boxer-Puncher. While there are many different sub-categories for these styles, all boxers can be classified by one of the four main styles.

The Swarmer The swarmer (inside fighter, pressure fighter, crowder) fights very aggressively and in close-quarters. This style involves bombarding the opponent with heavy attacks to prevent effective counters and wearing down the opponent's guard by attrition. Notably, a swarmer is identified by their forward movement, prioritizing their positioning to throw numerous punches while crowding their opponent. Boxers using this style consistently stay within or at the edge of the punching range of their opponent, forcing their opponent to engage 'on the back foot,' either retreating or attempting counter punches. This tends to require a large investment of energy (cardio) on the part of both fighters, meaning one goal of this style is to exhaust their opponent. In-fighters typically also fight in crouches to heavily target body and to be able to duck head shots more effectively. They rely on large volumes of punches for offensive and defensive purposes against while in close range and in clinching by landing punches while offsetting some of the long range and counter shots from their opponents.

Swarmer prioritize initiating engagements, usually by entering their opponent's punching range using a combination of footwork, feints and straight punches or uppercuts. Once inside of their opponent's range, their objective is to score (land punches), then quickly exit the engagement – ideally at the very edge of their opponent's punching range. A boxer may also exert pressure by initiating a clinch instead of exiting the engagement after punching while fighting in very close quarters. Ideally, the swarmer will seek to leverage their weight over their opponent in the clinch, forcing their opponent to expend energy.

An effective swarmer normally possesses a good "chin", as this style involves entering the punching range of their opponent before they can move inside where they are more effective (one exception could be Floyd Patterson who was knocked down 20 times in 64 fights). Pressure fighters are often shorter than other fighters with shorter reaches, as these fighters more frequently have to get inside of their opponent's punching range to land punches, though this is not always the rule.

Commonly known in-fighters are:

Henry Armstrong Carmen Basilio Bennie Briscoe Marcel Cerdan Julio Cesar Chavez Isaac Cruz Jack Dempsey Roberto Duran Joe Frazier Gennady Golovkin Wilfredo Gomez Roman Gonzalez Harry Greb Ricky Hatton Naoya Inoue Jake LaMotta Marcos Maidana Rocky Marciano Julio Cesar Martínez Battling Nelson Bobo Olson Manny Pacquiao Floyd Patterson Aaron Pryor Salvador Sanchez Leon Spinks Katie Taylor Mike Tyson Mickey Walker Micky Ward Jimmy Wilde Winky Wright Alfonso Zamora William Zepeda

The Out-Boxer The out-boxer (outside fighter, out-fighter, pure boxer) seeks to stay well outside of their opponent's punching range when disengaged and land long-range punches. This style can be seen as an inverse of pressure fighting. Out-boxers are known for quick movement and an emphasis on optimal positioning in the ring, commonly known as 'ringcraft'. Since these fighters rely on punches from long range, the focus of these fighters tends to be obtaining a favourable position using footwork and feints then using the threat of these punches to draw counters from their opponent, or else corral their opponents into unfavourable positions along the ropes or in the corner of the ring, thus making the opponent's movements much easier to anticipate. Using positioning outside of the opponent's range, a successful out-boxer will score using their jab and attempt to anticipate their opponent's response, applying an appropriate counter.

Out-boxers rely on the defensive advantages given to them by staying outside of their opponents punching range. Their opponent is forced to initiate engagements from this range, and a successful out-boxer will attempt to reduce possible responses of their opponent using feints and footwork – in particular, achieving a favourable 'angle,' where the opponent is within the out-boxer's punching range while the out-boxer is outside of theirs. An out-boxers style is often typified by speed and a focus on accurate punches over knockout blows.

Out-boxers are generally taller fighters with long reach, as these fighters tend to be more able to threaten punches from outside of their opponent's range.

Commonly known out-boxers are:

Laila Ali Muhammad Ali Lou Ambers Dmitry Bivol Wilfred Benitez Ezzard Charles Billy Conn James J. Corbett Sunny Edwards Tyson Fury Naseem Hamed Devin Haney Larry Holmes Bakhodir Jalolov Jack Johnson Benny Leonard Sugar Ray Leonard Nicolino Locche Vasiliy Lomachenko Tommy Loughran Joey Maxim Leotis Martin Floyd Mayweather Jr. Willie Pep Caleb Plant Guillermo Rigondeaux Barney Ross Shakur Stevenson Jersey Joe Walcott Andre Ward Pernell Whitaker Benjamin Whittaker

The Slugger A slugger (brawler or puncher) is a boxing style that prioritizes raw power and knockout punches over technical finesse and strategy. Their primary weapon is the ability to knock out an opponent with a single, powerful punch. Offensively, sluggers possess the best balance and knockout capabilities due to their tendency to plant their feet on the ground while fighting. They often have a thicker, stronger physique that allows them to generate and absorb heavy blows. They favour slower, harder punches like hooks and uppercuts over fast combinations. They tend to be slower, move less around the ring, and can have difficulty pursuing agile opponents. Sluggers typically have strong chins and can take a lot of damage while waiting for an opening. They apply constant pressure, close the distance, and aim to overwhelm their opponents with aggression.

Their fights are unpredictable and often end in knockouts. They are highly effective against pressure fighters who throw many punches but can be knocked out by one well-placed shot. The style relies on brute strength and the philosophy that only one decisive blow is needed to win. Their predictable punching patterns and slowness make them vulnerable to counterpunching from faster, more technical boxers. They can tire quickly if they are unable to secure an early knockout. Their lack of mobility and finesse can be exploited by agile opponents who use footwork and jabs.

Commonly known sluggers are:

Max Baer Iran Barkley David Benavidez Artur Beterbiev Riddick Bowe Derek Chisora Bert Cooper Bob Fitzsimmons Chris Eubank George Foreman Bob Foster Carl Froch Arturo Gatti Rocky Graziano Julian Jackson James J. Jeffries Stanley Ketchel Vitali Klitschko Sergey Kovalev Sonny Liston Luis Alberto Lopez Subriel Matias Ricardo Mayorga Terry McGovern Ray Mercer Donovan Ruddock Sandy Saddler John L. Sullivan Keith Thurman Kostya Tszyu Tim Tszyu Barbados Joe Walcott Deontay Wilder Harry Wills Carlos Zarate Serna Zhilei Zhang

The Boxer-Puncher The boxer-puncher possesses many of the qualities of the out-boxer: hand speed, often an outstanding jab combination, and/or counter-punching skills, better defence and accuracy than a slugger, while possessing brawler-type power. The boxer-puncher may also be more willing to fight in an aggressive swarmer-style than an out-boxer. In general, the boxer-puncher lacks the mobility and defensive expertise of the out-boxer (exceptions include Sugar Ray Robinson and Freddie Steele.) They are the most unpredictable among all four boxing styles. They do not fit in the rock-paper-scissors theory, so how the fight plays out between this style and other styles tends to be unpredictable. A boxer-puncher's ability to mix things up may prove to be a hindrance to any of the three other boxing styles, but at the same time their versatility means that they tend to be a master of none.

Commonly known boxer-punchers are:

Janibek Alimkhanuly Canelo Álvarez Alexis Arguello Charley Burley John Riel Casimero Miguel Cotto Terence Crawford Gervonta Davis Oscar De La Hoya Jaron Ennis Sebastian Fundora Joe Gans Tommy Gibbons Marvelous Marvin Hagler Thomas Hearns Bernard Hopkins Naoya Inoue Roy Jones Jr. Wladimir Klitschko Sam Langford Lennox Lewis Vasyl Lomachenko Ricardo Lopez Joe Louis Juan Manuel Marquez Gerald McClellan Carlos Monzon Archie Moore Erik Morales Sugar Ray Robinson Jesse Rodriguez Freddie Steele Felix Trinidad Gene Tunney Oleksandr Usyk Andre Ward Tony Zale

Other categories Counterpuncher A counterpuncher utilizes techniques that require the opposing boxer to make a mistake, and then capitalizing on that mistake. A skilled counterpuncher can utilize such techniques as winning rounds with the jab or psychological tactics to entice an opponent to fall into an aggressive style that will exhaust them and leave them open for counterpunches. Counterpunchers actively look for opportunities to bait an opponent into becoming too aggressive in order to capitalise on openings. Counterpunching can also be found in any of the four main boxing styles as it is not involved with range/distance but rather with the mentality of making an opponent miss and as a result making them pay. They are in the middle of offense and defence. As such, Muhammad Ali can be considered a counterpuncher even if he was an "out-boxer" similarly to Sugar Ray Robinson. For these reasons this form of boxing balances defence and offense but can lead to severe damage if the boxer who utilizes this technique has bad reflexes or is not quick enough.

Commonly known counterpunchers are:

Muhammad Ali Canelo Alvarez Charley Burley Terence Crawford Ezzard Charles Julio Cesar Chavez Sr. Roberto Duran Naseem Hamed Evander Holyfield Bernard Hopkins Naoya Inoue Roy Jones Jr. Sergio Martínez Juan Manuel Marquez Floyd Mayweather Jr. Archie Moore Willie Pep Jerry Quarry Salvador Sanchez Max Schmeling Errol Spence Jr. Shakur Stevenson James Toney Mike Tyson Jersey Joe Walcott Pernell Whitaker

Southpaw