New Taipei Metro (Chinese: 新北捷運; pinyin: Xīnběi Jiéyùn; Zhuyin Fuhao: ㄒㄧㄣ ㄅㄟˇ ㄐㄧㄝˊ ㄩㄣˋ) is a transit system serving New Taipei, Taiwan, operated by New Taipei Metro Corporation [zh]. The Danhai light rail, Ankeng light rail, Circular line, and Sanying line are currently in operation, with further lines are in various planning stages. Currently, these services are connected to Taipei Metro but operate independently, with the exception of the Circular line which is completely integrated into the Taipei Metro system but operated by New Taipei Metro.

The Danhai light rail is a light rail transit (LRT) network located in Tamsui District, New Taipei, Taiwan. It opened on 24 December 2018. The network connects to the Taipei Metro at Hongshulin.

Ankeng LRT serves the Xindian District (Ankeng) of New Taipei City by connecting the Circular line's Shisizhang metro station with Shuangcheng light rail station. Construction started around April 2016 and is well away on the road level part between station K1 and K5, with the first tracks having been laid in November 2018. As of October 2021 the project was 83.69% complete. From station K6 to K9 the tracks are elevated, as well as K2. As of June 2018, the entire section from station K1 to K6 is clearly visible on Google Maps running down the middle of Anyi Rd and then turning right onto Anjie Rd, passing through a cemetery and going across Ankang Road. As of September 2018, work has started on the bridge across the Xindian River to Shisizhang station. On February 10, 2023, the Ankeng LRT officially started operations and passengers could ride for free during the first month.

On 31 January 2020, the Circular line opened. Stage I construction consists of 14 stations running from New Taipei Industrial Park on Taoyuan Airport MRT to Dapinglin on Songshan–Xindian line and is about 15.4 km (9.6 mi) long. Electromechanical equipment for the line is supplied by Hitachi Rail STS, including driverless technology and CBTC Radio signalling. In February 2020, free rides were offered to passengers in order to raise awareness and test the route's popularity. On 5 May 2023, the Circular line was transferred from the Taipei Metro to the New Taipei Metro; however, the fare system is still integrated with the Taipei Metro. It is the first automated metro entirely within New Taipei City, with the only other driverless line in Greater Taipei currently in operation being the Wenhu line. The western section of the line officially opened on 31 January 2020. The line is currently 15.4 km (9.6 mi) long, with 14 stations. It uses CBTC Radio signalling from Ansaldo STS.

The Sanying line first section is 14.29 km (8.88 mi) long, has twelve stations and serving Tucheng, Sanxia and Yingge districts. The line shares the same terminus with the Taipei Metro Bannan line's terminal station at Dingpu.

The Danhai light rail uses its own rolling stock, which entered service in December 2018 with the opening of the first section. The Ankeng light rail uses its own rolling stock [zh], similar to those used on the Danhai light rail, which entered service in February 2023 with the opening of the line. Both types of trains run on 1,435 mm (4 ft 8+1⁄2 in) standard gauge.

The Hitachi Rail Italy Driverless Metro is used on the Circular line, which entered service in January 2020 with the opening of the first section. Each train consists of a 4-car EMU set and with open-gangway connection between cars. The trains run on 1,435 mm (4 ft 8+1⁄2 in) standard gauge without onboard operators.

New Taipei Metro also uses a fleet of specialised trains for maintenance of way purposes on the Circular line: