Ershad Sikder (Bengali: এরশাদ শিকদার; 1955 – 10 May 2004) was a Bangladeshi politician, criminal, and serial killer, known for committing various crimes such as murder, torture, theft, robbery and others.

Between 1976 and 1977, he formed another gang named Ramada Bahini, which was involved in theft, robberies and terrorist activities along the Khulna Railway Station and the Ghat area.

In 1982, after the rise of former president Hussain Muhammad Ershad, Sikder entered politics through the Jatiya Party.

The latter later gave a statement in court describing 24 killings, further claiming that Sikder had more than 70 victims, although only one weapon was recovered from his house, known as the "Swarnakamal".

Another wives included Sanjida Akter Shobha, Taslima of Rupsha Rajapur village, Farida of Bagerhat, Rampal Upazila; another unknown wife and Durgargaire of Paikgacha.

[14] In 2005, former Prime Minister Sheikh Hasina identified the arrest of Sikder as evidence of the judiciary functioning to Asma Jahangir and criticised the government of Bangladesh for using Rapid Action Battalion to kill criminals extrajudicially.

[15] In 2004 a Bangladeshi biographical thriller film, Khuni Shikder, was directed by Monowar Hossain Khokon.

[17] Kal Bhairaber Ghat, a book by Indian author Binod Ghoshal, based on the life of Ershad Sikder was published in 2020.