William Bamber (born 29 November 1993) is a New Zealand racing driver who competes for XONINE Racing in Lamborghini Super Trofeo North America. He is the brother of Earl Bamber.

Career Bamber began his racing career in late 2008, competing in the Suzuki Swift Sport Cup Championship New Zealand and finishing runner-up in the 2008–09 standings to Cody McMaster. Returning to the series the following year, Bamber took nine wins and four other podiums to secure the series title 170 points ahead of Ben Dallas. Moving to BNT NZV8s for the 2010–11 season, Bamber raced for LG Motorsport until the final two rounds, as he was prematurely let go by the team for "unresolved contractual issues".

In 2012, Bamber only competed in the first two Endurance rounds of the V8 SuperTourer season for John McIntyre Racing and Eddie Bell Racing. Following that, Bamber sat out 2013 before racing on a part-time basis across the following three seasons, most notably finishing second in the GTC Pro-Am class of the 2015 Sepang 12 Hours. In 2017, Bamber made his return to full-time racing, competing for FAW T2 Motorsport in Porsche Carrera Cup Asia. After taking his first win at Shanghai, Bamber won both races at Bangsaen and race two at Sepang to take third in points. In parallel, Bamber also drove for JRM JiaRui - TengDa in the China GT Championship, finishing runner-up in the GTC standings.

In early 2018, Bamber competed in the last two rounds of the 2017–18 Asian Le Mans Series for Team NZ, securing the GT Cup title by default after winning both races as the class' sole entrant. In 2018, Bamber entered the Thailand Super Series for Porsche-fielding B-Quick Racing in the GTC class, securing the title with a win at the finale at Buriram. During 2018, Bamber joined newly-created Earl Bamber Motorport for his second season in Porsche Carrera Cup Asia. In the seven-round season, Bamber took a lone win at Sepang and six other podiums to end the year fourth overall. Switching to Team Giltrap Group for his third season in Carrera Cup Asia, Bamber scored four wins and four other podiums to secure a third-place points finish. In parallel, Bamber also competed for D2 for the majority of the China GT Championship, finishing runner-up in the GT4 standings with two wins to his name. Towards the end of the year, Bamber made his FIA World Endurance Championship debut at the 2019 4 Hours of Shanghai for Dempsey-Proton Racing in LMGTE Am.

At the beginning of the following year, Bamber competed for his brother's team at the Dubai 24 Hour, finishing sixth in the GT3 Am class on his GT3 debut in endurance racing. Following that, Bamber was set to race for the team in GT World Challenge Asia, but the plans fell through when the season was cancelled due to COVID-19. In 2021, Bamber made a one-off return to racing, competing for EBM at the 24 Hours of Spa in the Pro-Am class.

Four years later, Bamber joined TR3 Racing for his full-time return to racing, competing in Lamborghini Super Trofeo North America alongside Elias De La Torre. Racing in the Pro class, Bamber won both Watkins Glen races to finish runner-up in points, before ending the year by finishing second at the World Finals with the same team. In 2026, Bamber remained with TR3 for a second season in Super Trofeo North America, and joined them in their return to GT World Challenge America aboard their Mercedes-AMG GT3 Evo. After winning both Sebring races in the former, Bamber parted ways with the team and switched to XONINE Racing to see out the rest of the Super Trofeo North America season.

Personal life

Bamber is the younger brother of 24 Hours of Le Mans winner Earl Bamber, with whom he co-founded Earl Bamber Motorsport (EBM) in 2018.

In August 2021, Bamber was arrested in Volusia County, Florida for domestic battery, prompting Hardpoint Motorsport to terminate its partnership with EBM. All charges were dropped in September, with the alleged victim – Bamber's girlfriend and ex-Hardpoint employee Sarah Serle – supporting Bamber, stating that "Will has never been an abuser". Bamber and Serle got married in Cabo San Lucas, Mexico in February 2023.

Karting record Karting career summary SeasonSeriesTeamPosition2003Kartsport NZ National Sprint Championship — CadetNew Zealand National Schools Championship — CadetSt Johns Hill School 2004Kartsport NZ National Sprint Championship — 100cc Junior Restricted14th 2006Blossom Sprint Meeting — Yamaha Junior20th2007Trophy of New Zealand — Yamaha Junior18thRMC New Zealand — Junior MaxNZ Top Half Series — 100cc Yamaha Junior15thNZ Top Half Series — Junior13thRMC Grand Finals — Junior Max31st2008Blossom Sprint Meeting — Yamaha Junior4thRMC New Zealand — Junior MaxSources:

Racing record Racing career summary Season Series Team Races Wins Poles F/Laps Podiums Points Position 2008–09 Suzuki Swift Sport Cup Championship New Zealand Suzuki Dealer Team 21 4 2 5 13 12132nd 2009–10 Suzuki Swift Sport Cup Championship New Zealand LG 18 9 3 3 13 11281st 2010 Suzuki Swift Sport Cup Hamilton Street Challenge 3 1 0 1 3 2092nd 2010–11 NZV8s International Motorsport 15 0 0 0 0 317 18th2012 V8SuperTourer – Endurance John McIntyre Racing 2 0 0 0 0 795‡ 8th‡ Eddie Bell Racing 0 0 0 0 0 336‡ 19th‡2014 Malaysia Merdeka Endurance Race Team NZ 1 0 0 0 0 8th Porsche Carrera Cup Asia LKM Racing 2 0 0 0 0 8 20th 2015 Sepang 12 Hours – GTC Pro-Am Team NZ PTE LTD 1 0 0 0 1 2nd2016 Bathurst 12 Hour – B Team NZ Motorsport 0 0 0 0 0 WD Porsche Carrera Cup Asia LKM Racing Team 3 0 0 0 0 19 25th 2016–17 Asian Le Mans Series – GT Cup Team NZ 1 0 0 0 1 18 4th2017 Porsche Carrera Cup Asia FAW T2 Motorsport 13 4 1 2 8 2203rd Porsche Carrera Cup Asia Invitational Race 1 0 0 0 0 5th China GT Championship – GTC JRM JiaRui - TengDa 10 4 0 4 6 162.52nd 2017–18 Asian Le Mans Series – GT Cup Team NZ 2 2 2 0 2 521st2018 Porsche Carrera Cup Asia Earl Bamber Motorsport 13 1 0 3 7 163 4th GT Asia B-Quik Racing Team 2 0 0 0 1 0 NC† 2018–19 Asian Le Mans Series – GT Cup Earl Bamber Motorsport 1 0 0 0 0 0 4th2019 China GT Championship – GT4 D2 8 2 0 0 7 1762nd Porsche Carrera Cup Asia Team Giltrap Group 13 4 6 1 8 1933rd China GT Championship – GT3 D2 2 0 0 0 0 0 21st 2019–20 FIA World Endurance Championship – LMGTE Am Dempsey-Proton Racing 1 0 0 0 0 8 32nd 2020 24H GT Series Continents – GT3-Am Earl Bamber Motorsport 1 0 0 0 0 15 NC 2021 GT World Challenge Europe Endurance Cup – Pro-Am EBM Giga Racing 1 0 0 0 0 17 22nd2025 Lamborghini Super Trofeo North America – Pro TR3 Racing 12 2 2 0 7 1222nd Lamborghini Super Trofeo World Finals – Pro 2 1 0 1 1 192nd2026 Lamborghini Super Trofeo North America – Pro TR3 Racing 2 2 2 0 247*1st* XONINE Racing 2 1 0 0 1 GT World Challenge America – Pro-Am TR3 Racing 1 0 0 0 0 0* 18th*Sources: Season still in progress.

† As Bamber was a guest driver, he was ineligible for points.

‡ Team standings.

Complete Asian Le Mans Series results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) + Year Team Class Car Engine 1 2 3 4 Pos. Points 2016–17 Team NZ GTC Porsche 991 GT3 Cup Porsche 4.0 L Flat-6 ZHU FUJ BUR SEP 4th 18 2017–18 Team NZ GTC Porsche 991 GT3 Cup Porsche 4.0 L Flat-6 ZHU FUJ BUR SEP1st52 2018–19 Earl Bamber Motorsport GTC Porsche 991 GT3 Cup Porsche 4.0 L Flat-6 SHA FUJ CHA SEP 4th 0

Complete FIA World Endurance Championship results (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Entrant Class Chassis Engine 1 2 3 4 5 6 7 8 Rank Points 2019–20 Dempsey-Proton Racing LMGTE Am Porsche 911 RSR Porsche 4.0 L Flat-6 SIL FUJ SHA BHR COA SPA LMS BHR 32nd 8

Complete GT World Challenge Europe results GT World Challenge Europe Endurance Cup (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team Car Class 1 2 3 4 5 6 7 Pos. Points 2021 EBM Giga Racing Porsche 911 GT3 R Pro-Am MNZ LEC SPA6H SPA12H SPA24H NÜR CAT 22nd 17

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