Ashna Sarkar (born 1992) is a British journalist and libertarian communist political activist. She is a senior editor at Novara Media and teaches at the Sandberg Institute in Amsterdam. Sarkar is a contributor to The Guardian and The Independent.

Ashna Sarkar was born in London in 1992. Her great-great-aunt, Pritilata Waddedar, was a Bengali nationalist who participated in armed struggle against the British Empire in 1930s Bengal. Her grandmother is a hospital carer. Her mother is a social worker who was an anti-racist and trade union activist in the 1970s and 1980s, helping to organise marches following the racially motivated murder of Altab Ali.

She attended Enfield County School, an all-girls comprehensive school, before moving to the Latymer School, a selective grammar school for sixth form education. She has both an undergraduate and a master's degree in English literature from University College London.

Sarkar is a senior editor at Novara Media and teaches at the Sandberg Institute in Amsterdam. In 2017, she taught global politics at Anglia Ruskin University as an associate lecturer.

She is a contributor to The Guardian and The Independent. She has been a panelist on BBC Question Time and Any Questions?, and is a frequent panellist on BBC Radio 4's Moral Maze.

Sarkar appeared in the 2019 BBC documentary series Rise of the Nazis to "illuminate the context and perspective of Ernst Thälmann, the leader of the Communist Party of Germany (KPD) from 1925 to 1933, who died in a concentration camp in 1944".

In July 2021, Bloomsbury said it would publish Sarkar's debut book, Minority Rule.

In 2023, Sarkar was ranked forty-fifth on the New Statesman's Left Power List, described by the magazine as "one of the left’s most ubiquitous commentators".

In her writings and commentary, Sarkar has expressed anti-imperialist, feminist, anti-fascist, and libertarian communist views. She has taken part in anti-racist, anti-fascist and anti-Trump protests and in 2018 joined a hunger strike to protest against the detention of asylum seekers at Yarl's Wood Immigration Removal Centre. She supported the Stansted 15's actions against deportation flights.

After a clip of her telling Piers Morgan on Good Morning Britain that she was "literally a communist!" went viral, Sarkar clarified her views as libertarian communist, a "long termist" who supports the former Labour Party leader Jeremy Corbyn's anti-austerity policies. Sarkar has described her view on communism as being "about the desire to see the coercive structures of state dismantled, while also having fun. It's not about driving everybody down to the same level of abjection, but making aesthetic pleasures and luxuries available to all."

After joining the Labour Party during the UK general election campaign in late 2019, Sarkar became closely associated in the media commentary on Corbyn's democratic socialist project. Sarkar announced that she had left the Labour Party in September 2021.

In September 2018, Sarkar defended anti-Zionist activist Ewa Jasiewicz, who, together with Yonatan Shapira, had painted "Free Gaza and Palestine, liberate all ghettos" onto a wall of the Warsaw Ghetto. Jasiewicz was scheduled to speak at a Momentum conference that was running alongside the official Labour conference. Sarkar wrote on Twitter that Jasiewicz and Shapira's words were anti-racist, not anti-semitic. In 2019, Sarkar said that, on reflection, she should have "drawn a line between defending Ewa, criticising the coverage and being more critical of the action itself which I don't think was well thought out".

In a 2018 interview with Teen Vogue, Sarkar described herself as being a "fierce critic" of the prison industrial complex, military industrial complex, the expanded use of drone warfare and the expansion of deportation under both Barack Obama and Donald Trump. She said the loss of jobs due to automation could give rise to fascism as a way of controlling the "surplus disposable population". Alternatively, the extra time created by automation could liberate people to "imagine different ways of living" and "pursu[ing] your passions".

On 16 March 2021, Sunday Telegraph columnist Julie Burchill was ordered to pay 'substantial damages' to Sarkar after writing posts alleging that Sarkar sympathised with fundamentalist Islam and that she "worship[ped] a paedophile" in the Islamic prophet Muhammad. Burchill also wrote a sexual poem about Sarkar, 'liked' Facebook posts saying that Sarkar should kill herself and suggested that she was a victim of female genital mutilation. Sarkar wrote in The Guardian that the abuse had affected her mental health and that she had been prescribed anti-anxiety drugs for the first time in her life. Sarkar said she had no part in the decision by the publishers Little, Brown to cancel Burchill's book contract. She also wrote: "The media's reporting of the issue ignored the defamation, racism and harassment in favour of framing me as part of the woke mob—and Burchill as its victim." An apology published by Burchill included, "I should not have sent these tweets, some of which included racist and misogynist comments regarding Ms Sarkar's appearance and her sex life" and acknowledged that it was her publisher, not Sarkar, who was responsible for the cancellation of her book deal.

Sarkar lives in North London. She is Muslim and she has said: "I pray, I meditate – it's loosey-goosey, pick'n'mix spirituality probably, if I'm being honest with myself; but for me the name I can give to it is 'Islam'."

• Ash Sarkar's profile on The Guardian
• Ash Sarkar's profile on The Independent