Samuel Isadore Rosenberg (born May 18, 1950) is an American politician who has served as a member of the Maryland House of Delegates representing northwest Baltimore since 1983.

Afterwards, Rosenberg worked as a congressional assistant and as a lobbyist for Baltimore Mayor William Donald Schaefer in the Maryland General Assembly from 1980 to 1981.

[31][32] In 2023, Rosenberg introduced legislation to shield the health care and insurance information of people who travel to Maryland to receive an abortion.

[34] In October 1998, following the murder of Matthew Shepard, he introduced legislation to expand the hate crimes statute to include sexual orientation.

[39] In 2008, Rosenberg supported legislation to expand the state's collection of DNA samples, which was developed under a work group he led.

[41] In March 2019, Rosenberg supported a bill that would allow Johns Hopkins University to have its own private police force.

[43] During the 1986 legislative session, Rosenberg voted for a bill that would overturn a Maryland Court of Appeals ruling that allowed victims of crimes committed with Saturday night special handguns to sue the weapon's manufacturers.

[44] In 1996, he voted for a gun control bill to limit handgun purchases and prohibit domestic abusers from owning firearms.

[45] In December 2012, following the Sandy Hook Elementary School shooting that left 28 dead, Rosenberg said he would support a ban on assault weapons in Maryland.

[56] In 1999, Rosenberg introduced a bill that would expand the state's definition of abandoned properties and give the city of Baltimore more power to condemn and demolish such buildings.

[63] The bill failed to pass out of the legislature, but became law after Governor Larry Hogan signed an executive order implementing it in October 2017.

[65] During the 2024 legislative session, Rosenberg supported a bill to remove Maryland Council on American–Islamic Relations director Zainab Chaudry from the Maryland Commission on Hate Crime Response and Prevention after she made posts on Facebook comparing Israel to Nazi Germany, denied that Israeli children were murdered during the October 7 Hamas-led attack on Israel, and condemned the killing of innocent Gazan civilians.

[70] He supported an unsuccessful bill to approve the plan during the 2019 legislative session,[71] which was later renegotiated to transfer a portion of the costs onto the Stronach Group, which owns Pimlico, and to include investments in communities surrounding the race course.

[78] In July 2019, he said he opposed a Trump administration proposal to limit Supplemental Nutrition Assistance Program benefits to 130 percent of the federal poverty level.

The bill would have only impacted French railway company SNCF (whose subsidiary, Keolis, submitted a bid to operate the lines), whom Rosenberg says should "still be held liable for the damage done to Holocaust victims".

[87] The bill was amended to require companies with Holocaust links to speed up the digitization of their archives and signed into law by Governor Martin O'Malley.

[89] In 2022, Rosenberg introduced a bill to require the Maryland Department of Transportation to seek federal approval for an east-west rail line in Baltimore.