In association football, a midfielder takes an outfield position primarily in the middle of the pitch. Midfielders may play an exclusively defensive role breaking up attacks, and are in that case known as defensive midfielders. As central midfielders often go across boundaries, with mobility and passing ability, they are often referred to as deep-lying midfielders, playmakers, box-to-box midfielders, or holding midfielders. There are also attacking midfielders with limited defensive assignments.

The number of midfielders on a team and their assigned roles depend on which formation is used; the area these players operate in on the pitch is commonly referred to as the midfield. Its name derives from the middle part of the pitch.

Managers frequently assign one or more midfielders to disrupt the opposing team's attacks, while others may be tasked with creating goals, or have equal responsibilities between attack and defence. Midfielders are the players who typically travel the greatest distance during a match. Midfielders arguably have the most possession during a game, and thus, they are some of the fittest players on the pitch. Midfielders are often assigned the task of assisting forwards to create scoring opportunities.

Central midfielder

Central midfielders are players whose role is divided between attacking and defensive duties to control the play in and around the centre of the pitch. These players will try to pass the ball to the team's attacking midfielders and forwards and may also help their team's attacks by making runs into the opposition's penalty area and attempting shots on goal themselves. They also provide secondary support to attackers, both in and out of possession.

When the opposing team has the ball, a central midfielder may drop back to protect the goal or move forward and press the opposition ball-carrier to recover the ball. A centre midfielder defending their goal will move in front of their centre-backs to block long shots by the opposition and track opposition midfielders making runs towards the goal. The 4–3–3 and 4–5–1 formations each use three central midfielders. The 4−4−2 formation may use two central midfielders, and in the 4–2–3–1 formation one of the two deeper midfielders may be a central midfielder.

Box-to-box midfielder

The term box-to-box midfielder refers to central midfielders who are hard-working and who have good all-round abilities, which makes them skilled at both defending and attacking. These players can therefore track back to their own box to make tackles and block shots and also carry the ball forward or run to the opponents' box to try to score. Beginning in the mid-2000s, the change of trends and the decline of the standard 4–4–2 formation (in many cases making way for the 4–2–3–1 and 4–3–3 formations) imposed restrictions on the typical box-to-box midfielders of the 1980s and 1990s, as teams' two midfield roles were now often divided into "holders" or "creators", with a third variation upon the role being described as that of a "carrier" or "surger". Notable examples of box-to-box midfielders are Lothar Matthäus, Michael Ballack, Clarence Seedorf, Bastian Schweinsteiger, Luka Modrić, Steven Gerrard, Johan Neeskens, Sócrates, Yaya Touré, Arturo Vidal, Patrick Vieira, Frank Lampard, Bryan Robson, Roy Keane, and more recently, Jude Bellingham and Declan Rice.

Mezzala In Italian football, the term mezzala (literally "half-winger" in Italian) is used to describe the position of the one or two central midfielders who play on either side of a holding midfielder, playmaker, or both. The term was initially applied to the role of an inside forward in the WM and Metodo formations in Italian, but later described a specific type of central midfielder. The mezzala is often a quick and hard-working attack-minded midfielder, with good skills and noted offensive capabilities, as well as a tendency to make overlapping attacking runs, but also a player who participates in the defensive aspect of the game, and who can give width to a team by drifting out wide; as such, the term can be applied to several different roles. In English, the term has come to be seen as a variant of the box-to-box midfielder role.

Defensive midfielder

Defensive midfielders are midfield players who focus on protecting their team's goal. These players may defend a zone in front of their team's defence, and performance analyst Amr Ehab Emara considers them to be part of the defensive line because of their defensive responsibilities, or man mark specific opposition attackers. Defensive midfielders may also move to the full-back or centre-back positions if those players move forward to join in an attack.

Sergio Busquets described his attitude: "The coach knows that I am an obedient player who likes to help out, and if I have to run to the wing to cover someone's position, great." A good defensive midfielder needs good positional awareness, anticipation of the opponent's play, marking, tackling, interceptions, passing, and great stamina and strength (for their tackling). In South American football, this role is known as a volante de marca, while in Mexico it is known as volante de contención. In Portugal, it is instead known as trinco.

Holding midfielder A holding or deep-lying midfielder stays close to their team's defence, while other midfielders may move forward to attack. The holding midfielder may also have responsibilities when their team has the ball. This player will make mostly short and simple passes to more attacking members of their team, but may try some more difficult passes depending on the team's strategy. Marcelo Bielsa is considered a pioneer in the use of a holding midfielder in defence. This position may be seen in the 4–2–3–1 and 4–4–2 diamond formations. Writer Jonathan Wilson has identified three different types of holding midfielder, namely the destroyer, the creator, and the carrier.

Initially, a defensive midfielder, or "destroyer", and a playmaker, or "creator", were often fielded alongside each other as a team's two holding central midfielders. The destroyer was usually responsible for making tackles, regaining possession, and distributing the ball to the creator, while the creator was responsible for retaining possession and keeping the ball moving, often with long passes out to the flanks, in the manner of a more old-fashioned deep-lying playmaker or regista (see below). Earlier examples of a destroyer are Nobby Stiles, Herbert Wimmer, and Marco Tardelli, while later examples include Claude Makélélé and Javier Mascherano. Early examples of a creator would be Gérson, Glenn Hoddle, and Sunday Oliseh, while more recent examples are Xabi Alonso, Michael Carrick and Keira Walsh.

The latest and third type of holding midfielder developed as a box-to-box midfielder, or "carrier" or "surger", neither entirely destructive nor creative, who is capable of winning back possession and subsequently advancing from deeper positions either by distributing the ball to a teammate and making late runs into the box, or by carrying the ball themselves; recent examples of this type of player are Clarence Seedorf and Bastian Schweinsteiger, while Sami Khedira and Fernandinho are destroyers with carrying tendencies. Luka Modrić is known as a carrier with several qualities of the regista, widely seen as emblematic of box-to-box playmaking. Yaya Touré was a carrier who became a playmaker later in his career. N'Golo Kanté started as the quintessential destroyer, but developed carrying tendencies under Antonio Conte at Chelsea.

Ball-winning midfielder A ball-winning midfielder is a midfielder whose primary defensive function is to disrupt opposition possession and regain the ball. Unlike the broader concept of a defensive midfielder, the term describes a player's function rather than a fixed position. A ball-winning midfielder may therefore operate as the deepest midfielder, as part of a double pivot, or in a more advanced central midfield position.

The role involves pressing opponents, making tackles and interceptions, competing for loose and second balls, tracking runners and protecting central areas. Ball-winning midfielders may also regain possession through anticipation, positioning and blocking passing lanes rather than through direct challenges. After winning the ball, they may initiate an attacking transition with a forward pass or retain possession with a safer pass.

A ball-winning midfielder is not necessarily synonymous with a holding midfielder. Holding midfielders generally prioritise maintaining their position and providing defensive balance behind more advanced teammates, whereas a ball-winning midfielder may be given greater freedom to leave their position to press or challenge opponents. The two roles can nevertheless overlap, with some players combining positional discipline with active attempts to regain possession.

Deep-lying playmaker

A deep-lying playmaker (Strolling 10) is a holding midfielder who specialises in ball skills such as passing, rather than defensive skills like tackling. When this player has the ball, they may attempt longer or more complex passes than other holding players. They may try to set the tempo of their team's play, retain possession, or build plays through short exchanges, or they may try to pass the ball long to a centre forward or winger, or even pass short to a teammate in the hole, the area between the opponents' defenders and midfielders.

In Italy, the deep-lying playmaker is known as a regista, whereas in Brazil, it is known as a "meia-armador". In Italy, the role of the regista developed from the centre half-back or centromediano metodista position in Vittorio Pozzo's metodo system (a precursor of the central or holding midfield position in the 2–3–2–3 formation), as the metodistas responsibilities were not entirely defensive but also creative; as such, the metodista was not solely tasked with breaking down possession, but also with starting attacking plays after winning back the ball.

Writer Jonathan Wilson instead described Xabi Alonso's holding midfield role as that of a "creator", a player who was responsible for retaining possession in the manner of a more old-fashioned deep-lying playmaker or regista, noting that: "although capable of making tackles, [Alonso] focused on keeping the ball moving, occasionally raking long passes out to the flanks to change the angle of attack."

Centre-half The historic central half-back position gradually retreated from the midfield line to provide increased protection to the back line against centre-forwards – that dedicated defensive role in the centre is still commonly referred to as a "centre-half" as a legacy of its origins. In Italian football jargon, this position was known as the centromediano metodista or metodista, as it became an increasingly important role in Vittorio Pozzo's metodo system, although this term was later also applied to describe players who operated in a central holding-midfielder role, but who also had creative responsibilities in addition to defensive duties.

Attacking midfielder An attacking midfielder is a midfield or forward player who is positioned in an advanced midfield position, usually between central midfield and the team's forwards, and who has a primarily offensive role.

Some attacking midfielders are called trequartista or fantasista (, i.e. a creative playmaker between the forwards and the midfield), who are usually mobile, creative and highly skillful players, known for their deft touch, technical ability, dribbling skills, vision, ability to shoot from long range, and passing prowess.