Argentina's World Cup 26 — Messi In, Mastantuono Out

The Short Version

Lionel Scaloni named Argentina’s 26-man squad for the 2026 World Cup on May 28, locking the defending champions’ roster just days before the FIFA cut-off. Lionel Messi will captain the side in his record sixth World Cup, leading the title defence with the same spine that won Qatar 2022 — Emiliano Martínez in goal, Otamendi-Romero-Lisandro Martínez at the back, De Paul, Mac Allister and Enzo Fernández in midfield, Lautaro Martínez and Julián Álvarez ahead. The biggest omission is Real Madrid teenager Franco Mastantuono, the squad’s only major shock. Veteran defender Marcos Acuña, a 2022 winner, was also cut, along with Paulo Dybala. Argentina open Group J against Algeria on June 16 in Kansas City, then face Austria and Jordan in Arlington. No nation has won back-to-back World Cups since Brazil in 1962; “La Scaloneta” sets out to be the first.

A Squad of Few Surprises — and One Big One

Scaloni’s instinct since Qatar has been continuity, and this 26 honours it: most of the men who lifted the trophy in 2022 are on the plane, joined by a thin layer of new blood that earned its place over two qualifying years. The selection is best read as “the same team, plus the youngsters who couldn’t be ignored” — and as the manager’s vote of faith in players who have already delivered the country its third star.

The headline non-selection is Franco Mastantuono. The 18-year-old Real Madrid signing has been built into one of Argentina’s most exciting prospects, and his omission is the squad’s only genuine shock. He joins veteran left-back Marcos Acuña — a 2022 World Cup winner — and Paulo Dybala on the list of names that did not make the cut.

The 26, Position by Position

The final squad was confirmed by Lionel Scaloni on May 28, three days before FIFA’s June 2 administrative deadline. Multiple Argentine and international outlets published the list within hours; the table below is the version that matches all primary reports.

Captain Lionel Messi leads the group, the only player on the list with more than 100 international goals. The clearest structural signal of the squad is its forward count: with eight strikers and only seven specialist midfielders, Scaloni has built a team meant to win games by scoring, not by suffocating them.

Messi: A Sixth World Cup, and the Captain’s Armband Again

At 38, Messi makes history just by being in the squad — no man before him has been listed for a sixth World Cup. He arrives with Argentina’s all-time records for caps and goals already secured, and the medical question that hung over the Inter Miami hamstring scare resolved as the staff hoped: he was always going. Scaloni’s earlier line — that Messi “won’t arrive fully fit” — still applies, and the manager’s plan is to manage load through the warm-ups (Honduras on June 6, Iceland on June 9) and the group stage rather than chase peak form before it matters.

The bigger tactical question is what role he plays. The 2022 version was a roaming No. 10 with the freedom to walk between phases of the game; the 2026 version, in a deeper, more conservative role, is the more likely shape. Either way, his presence is the gravitational pull around which everything else in this squad is organised.

The Big Cut: Why Mastantuono Was Left Out

The single most discussed name in the Argentine media on the day of the announcement was not anyone on the list. It was the 18-year-old who isn’t. Franco Mastantuono — signed by Real Madrid, fast-tracked into the senior team, hailed by some pundits as the next great No. 10 — did not make the cut. Scaloni’s logic is consistent with how he has built this squad: in a forward line already containing Messi, Lautaro, Álvarez, Nico Paz and Almada, there was no obvious minute for a teenager still learning the international rhythm. It is a decision about timing rather than ability — and one most Argentine commentators framed as harsh but defensible.

Acuña’s omission is the other notable one. The 34-year-old was a starter in the 2022 final; Scaloni went younger at left-back with Tagliafico continuing and Medina the new face. Dybala, frequently on the edge of squads, did not make it either.

The Spine: Mostly the Same as Qatar 2022

Look down the list and the Qatar 2022 spine is intact: Emiliano Martínez in goal, an Otamendi-Romero-Lisandro Martínez choice at centre-back, De Paul and Mac Allister and Enzo Fernández in midfield, Lautaro and Álvarez supporting Messi up front. That continuity is the squad’s real selling point. The team that won the trophy three and a half years ago is, structurally, the team that will try to defend it.

The new layer is forward-thin and youthful: Como’s Nico Paz (now a Champions League regular), Strasbourg’s teenage midfielder Valentín Barco, Atlético’s Giuliano Simeone and Palmeiras’ “Flaco” López. None of these are guaranteed minutes against Algeria; all are insurance, options, and — in Paz’s case — the most credible candidate to inherit the No. 10 role when Messi finally walks away.

Group J: Algeria First, Then the Defence Begins

Argentina open in Group J against Algeria on June 16 in Kansas City, then face Austria on June 22 and Jordan on June 27, both in Arlington, Texas. The bracket is, on paper, navigable. Algeria are the most testing of the three, but a champion’s draw is rarely about the group — it is about the knock-out path, and that won’t be set until the second round of matches.

The historical stakes are the highest in 64 years. No nation has won consecutive World Cups since Brazil in 1962, and Argentina’s own last successful title defence ended in 1990, when they reached the final and lost. “La Scaloneta” — the affectionate Argentine nickname for this team — sets out to be the first to break a six-decade drought.

FAQ

When did Argentina announce its World Cup 2026 squad? Scaloni named the official 26-man list on May 28, 2026, three days ahead of FIFA’s June 2 administrative deadline. The Argentine football association confirmed the squad through its official channels and player calls; multiple outlets published the full list within hours.

Who is in Argentina’s 2026 World Cup squad? The 26 are: GKs Emiliano Martínez, Gerónimo Rulli and Juan Musso; defenders Cristian Romero, Lisandro Martínez, Nicolás Otamendi, Nahuel Molina, Gonzalo Montiel, Nicolás Tagliafico, Leonardo Balerdi and Facundo Medina; midfielders Rodrigo De Paul, Alexis Mac Allister, Enzo Fernández, Leandro Paredes, Giovani Lo Celso, Exequiel Palacios and Valentín Barco; and forwards Lionel Messi (captain), Lautaro Martínez, Julián Álvarez, Nicolás González, Giuliano Simeone, Nico Paz, Thiago Almada and José Manuel López.

Who is Argentina’s captain for the 2026 World Cup? Lionel Messi. The 38-year-old will lead Argentina in his record sixth World Cup — no male player before him has been named in a senior World Cup squad six times.

Is Lionel Messi in Argentina’s World Cup 2026 squad? Yes. Messi is in the squad and will captain the side. He arrives still managing the hamstring issue picked up at Inter Miami, but the staff expects him to play.

Why was Mastantuono not in Argentina’s World Cup squad? Real Madrid teenager Franco Mastantuono was the biggest omission. With Messi, Lautaro Martínez, Julián Álvarez, Nico Paz and Thiago Almada already in the attack, Scaloni judged there was no clear minute for an 18-year-old still adapting to senior international football. It is the squad’s only major shock.

Who else was cut from Argentina’s World Cup squad? Veteran left-back Marcos Acuña, a starter in the 2022 World Cup final, was left out, with Scaloni going younger in the position. Paulo Dybala did not make the cut either, continuing the pattern of major-tournament omissions for the Roma forward.

What group is Argentina in for the 2026 World Cup, and when do they play? Argentina are in Group J. They open against Algeria on June 16 in Kansas City, then play Austria on June 22 in Arlington, Texas, and Jordan on June 27, also in Arlington.

Can Argentina win back-to-back World Cups? No nation has won consecutive World Cups since Brazil in 1958 and 1962. Argentina’s own last attempt to defend the title — in 1990 — ended in a final loss. The bookmakers and most previews list Argentina among the top three favourites for 2026.

Are there any teenagers in Argentina’s 2026 World Cup squad? Yes. Strasbourg midfielder Valentín Barco, who turns 21 during the tournament, is the youngest outfield player in the squad. Como forward Nico Paz, 21, is also in the group of young players Scaloni has trusted with insurance roles.