The Defected (Chinese: 鐵探; Cantonese Yale: tit tam; lit. Iron Detective) is a 2019 Hong Kong television drama produced and directed by So Man-Chung, with Carmen So serving as co-director. It is a co-production between the Hong Kong broadcasting company TVB and China's Tencent Penguin Pictures, a television production unit launched by Tencent. It stars Benjamin Yuen as Inspector Sheung Sing, a policeman who becomes embroiled in a conspiracy plaguing the high-ranking officials due to an incident that almost cost him his life.

The drama premiered on TVB Jade in Hong Kong, Macau and on Astro On Demand in Malaysia on April 1, 2019, and aired its final episode on May 10, 2019. In Mainland China, the first five episodes were released on Tencent Video on April 1, and the next five episodes were made available for VIP members. Tencent Video released five new episodes every week. "The Defected" premiered with the highest first episode ratings since 2019, with a viewership rating of 29.5 points.

On April 5, 2019 it was announced that Netflix has purchased the rights to distribute The Defected internationally, becoming the first TVB drama to be shown on Netflix.