Alexander David Sobel (born 26 April 1975) is a British Labour and Co-operative politician who has served as the Member of Parliament (MP) for Leeds Central and Headingley, previously Leeds North West, since 2017. He served as Shadow Minister for Nature Recovery and the Domestic Environment from 2021 to 2023.

Alexander Sobel was born on 26 April 1975 in Hyde Park, Leeds, to parents who came to England from Israel in 1971. He grew up in Beaconsfield, attending Holtspur Middle School and John Hampden Grammar School. As a teenager, he joined anti-fascist and environmental protests in Leeds. He is Jewish.

After graduating in information systems at the University of Leeds in 1997, Sobel worked with social enterprises, and ran the regional body Social Enterprise Yorkshire and the Humber from 2009 until 2017.

Sobel joined the Labour Party in 1997.

After standing unsuccessfully in four Leeds City Council elections between 2002 and 2007, he was elected as a Labour councillor for the Moortown ward in the 2012 council election, and was re-elected in the 2016 council election. He led the council's work on air pollution and climate change.

In December 2015, Sobel co-founded the activist group Open Labour.

At the 2005 general election, Sobel stood as the Labour candidate in Beaconsfield, coming third with 19.4% of the vote behind the incumbent Conservative MP Dominic Grieve and the Liberal Democrat candidate.

At the 2015 general election, Sobel stood in Leeds North West, coming second with 30.1% of the vote behind the incumbent Liberal Democrat MP Greg Mulholland. During the election, Sobel and the Leeds North West Labour Party were required to publish an apology leaflet and pay legal costs after falsely claiming that the incumbent Liberal Democrat MP Greg Mulholland voted for the Academies Act 2010.