This year's MotoGP season, its longest-ever in history, kicks off on March 8-10 in Qatar and will feature 11 teams employing two riders each.
Here is the lowdown on the full entry list below, plus who will head up each rider's respective crew.
#1 Pecco Bagnaia
Crew chief: Cristian Gabarrini
#23 Enea Bastianini
Crew chief: Marco Rigamonti
Now a two-time MotoGP champion, having weathered a late-season onslaught from Jorge Martin last season, Pecco Bagnaia will bid for a third title in just four years at the works Ducati team - having so quickly made himself the Bologna brand's talisman.
Team-mate Enea Bastianini was poised to challenge him in 2023 but suffered season-altering injuries and didn't gel with the bike - and now faces an uphill battle to not just prove his championship credentials but defend his ride from other contenders like Martin.
Both have kept the same crew chiefs as in 2023.
#23 Franco Morbidelli
Crew chief: Massimo Branchini
#89 Jorge Martin
Crew chief: Daniele Romagnoli
Jorge Martin is entering his fourth season of MotoGP, having raced only with Pramac so far in his premier-class career.
He came close to that ever-elusive accolade of winning a MotoGP title as a satellite rider last year, and will no doubt aim to get it over the line this year - but also seems fully set on securing a works ride somewhere on 2025.
On the other side of the garage, Yamaha outcast Franco Morbidelli will seek to rebuild his MotoGP reputation, after a breakout stint with the Japanese firm's former satellite team Petronas SRT was followed by a largely fruitless two seasons and a bit in works black-and-blue.
The team's crew chief roster will remain the same, with Martin continuing with Romagnoli and Morbidelli inheriting Massimo Branchini - a Moto2 title-winning crew chief with multiple riders in the past - from Johann Zarco.
#49 Fabio Di Giannantonio
Crew chief: David Munoz
#72 Marco Bezzecchi
Crew chief: Matteo Flamigni
Marco Bezzecchi became the VR46 team's first MotoGP race winner last year, but a late-season injury put an end to his outsider title campaign.
He passed up Ducati's offer of a factory-spec bike at Pramac to remain with his mentor Valentino Rossi's team.
The sudden vacancy that had formed on the other side of the garage was filled up by end-of-season breakout Fabio Di Giannantonio after VR46's bid to bring in Moto2 star Fermin Aldeguer came up against too-high financial demands.
Di Giannantonio will work with David Munoz (formerly at the side of Rossi himself and Luca Marini), while Marco Bezzecchi continues with Matteo Flamigni.
#73 Alex Marquez
Crew chief: Donatello Giovanotti
#93 Marc Marquez
Crew chief: Frankie Carchedi
The Marquez brothers are MotoGP team-mates once again, having only got to start one race in the same colours in 2020 before Marc's injury.
The elder Marquez arrives after getting out of a four-year Honda deal one year early, and is many people's pick for the championship even with a year-old Ducati.
The younger Marquez, meanwhile, will be aiming to build on a promising but messy first campaign on a Desmosedici.
Gresini's crew chief line-up is unchanged, with Marc - having worked alongside Santi Hernandez for all of his MotoGP career so far - teaming up with Frankie Carchedi, who had won the MotoGP title with Joan Mir back in 2020.
#33 Brad Binder
Crew chief: Andres Madrid
#43 Jack Miller
Crew chief: Cristhian Pupulin
Brad Binder is on a two-year winless streak (if you don't count sprints, which maybe you should), but has emerged as KTM's unquestionable standard-bearer and earned himself a contract extension through 2024.
But team-mate Jack Miller will have a challenge on his hands to ensure he is still KTM's best option going forward - after what was a mostly impressive but definitely flawed rookie season.
Both Miller, who had brought Cristhian Pupulin with him from Ducati, and Binder are keeping the same crew chiefs.
Tech3 Gas Gas
#31 Pedro Acosta
Crew chief: Paul Trevathan
#37 Augusto Fernandez
Crew chief: Alex Merhand
Moto3 and Moto2 champion Pedro Acosta is the most exciting MotoGP rookie in a long time, maybe since Marc Marquez a decade ago, and remains within the Pierer Mobility Group family as he swaps KTM orange for Gas Gas red.
His former Moto2 team-mate and fellow Moto2 champion Augusto Fernandez is the more experienced part of the line-up, having acquitted himself so well in his rookie season that KTM/Gas Gas moved to drop Pol Espargaro and not him to make room for Acosta.
Acosta partners up with Espargaro's former crew chief Trevathan.
#25 Raul Fernandez
Crew chief: Noe Herrera
#88 Miguel Oliveira
Crew chief: Giovanni Mattarollo
Both Miguel Oliveira and Raul Fernandez were only successful in flashes in their first season as Aprilia riders, competing on year-old RS GPs for Trackhouse's predecessor RNF.
Oliveira spent much of the 2023 season on the injured list and ended it the same way, while Fernandez only really showed his potential in pre- and post-season testing.
But with the new team offering more stability and an upgrade in equipment - Oliveira is set to run the 2024-spec Aprilia right away, while Fernandez should get some version of it during the season.
Their two crew chiefs follow them along from RNF to Trackhouse.
#10 Luca Marini
Crew chief: Giacomo Guidotti
#36 Joan Mir
Crew chief: Santi Hernandez
Entering a contract year after a dreadful first season with Honda, Mir is pairing up with Marc Marquez's long-term crew chief Santi Hernandez, following Marquez's exit from the team.
Mir's previous crew chief Giacomo Guidotti will instead work with Marquez's replacement Luca Marini, who has joined on a two-year deal after making a decent step forward in his third season of MotoGP last year as part of the VR46 Ducati team owned by his mentor and brother Valentino Rossi.
#5 Johann Zarco
Crew chief: David Garcia
#30 Takaaki Nakagami
Crew chief: Klaus Nohles
Contracted to both LCR and Honda, Johann Zarco passed up an offer to stay with Ducati to join the Japanese brand in a longer-term commitment and (reportedly) on more money.
Zarco is paired up with David Garcia, who won a race with previous rider Alex Rins last year, while LCR mainstay Takaaki Nakagami continues with Klaus Nohles (who had worked with the Honda test team before) for a second season.
#20 Fabio Quartararo
Crew chief: Diego Gubellini
#42 Alex Rins
Crew chief: Patrick Primmer
Fabio Quartararo enters his fourth season as a factory Yamaha rider, but could seek to move on at the end of 2024 if the Japanese brand doesn't make a step forward after a thoroughly disappointing 2023.
His long-term team-mate Morbidelli has been replaced by Alex Rins, the highly-regarded race winner poached away from Honda and given Morbidelli's crew chief Patrick Primmer.