Zack Nimrod D. Tabudlo (born December 6, 2001) is a Filipino singer and songwriter. He was first seen as a contestant on the first season of The Voice Kids under Bamboo Mañalac's mentorship, where he was eliminated in the competition's second round. He later began his musical career in 2018 before he rose to fame in 2020 when he joined MCA Music (now UMG Philippines) through sub-label Island Records Philippines.

His debut single "Nangangamba" was released in 2020. His song "Binibini", released in 2021, broke a record as the top local song on Spotify's Philippines charts. His debut album, Episode, was released on October 15, 2021. His track "Pano" became the longest-running number-one OPM song on Spotify Philippines, the first number-one song to debut on the Billboard Philippines Songs chart, and charted in other Southeast Asian countries, including Malaysia, Thailand, and Vietnam.

In 2022, Tabudlo became one of the artists signed to the Republic Records Philippines label under UMG Philippines. On February 20, 2022, he performed in Expo 2020 Dubai.

In 2023, he released his track "Akin Ka" in anticipation of his second studio album Zack: For All released on February 14. Aside from For All, he also released another album, Third Time's a Charm, that year.