Andrzej Jan Kalwas (born 23 June 1936 in Włoclawek) is a Polish lawyer, legal adviser, former minister of justice and attorney general in the government of Marek Belka.

He completed the apprenticeship at the State Commercial Arbitration, and in 1965 he started his career as a legal adviser.

In the years 1983–1995 he was the dean of the board of the District Chamber of Legal Advisors in Warsaw, and in the years 1995–2004 the president of the National Council of Legal Advisors.

In 2004, he ran unsuccessfully in the elections to the European Parliament from the Warsaw list of the Voting Committee Together for the Future, formed by various non-governmental organizations.

On 18 April 2018, he was detained by officers of the Central Anticorruption Bureau to present him with charges as part of the investigation of persons claiming to be special services officers during the government of Civic Platform.