List of Famous people named Kaj

Kaj Johannes Linna, né Kaj Juhani Kaukosalo, is a Finnish man who was sentenced to life imprisonment for a robbery-murder in Kalamark outside of Piteå, Sweden on 14 April 2004. He served the longest overturned sentence in Swedish history before a retrial was ordered, in which he was exonerated and freed. He was later awarded 18 million SEK as compensation for his time in prison, a record sum.

Kaj Gabriel Franck was one of the leading figures of Finnish design and an influential figure in design and applied arts between 1940–1980.

Kaj Aage Gunnar Strand was a Danish astronomer who worked in Denmark and the United States. He was Scientific Director of the U.S. Naval Observatory from 1963 to 1977. He specialized in astrometry, especially work on double stars and stellar distances.

Kaj Leo Holm Johannesen is a Faroese politician. He was the prime minister of the Faroe Islands, representing the Faroese Unionist Party (Sambandsflokkurin). He took office, succeeding Jóannes Eidesgaard on 26 September 2008 and left office on 15 September 2015, after his party and coalition with Fólkaflokkurin and Miðflokkurin lost the general election on 1 September 2015. Johannesen is also a former international football player; he was goalkeeper for the Faroe Islands national football team.

Kaj Harald Leininger Munk was a Danish playwright and Lutheran pastor, known for his cultural engagement and his martyrdom during the Occupation of Denmark of World War II. He is commemorated as a martyr in the Calendar of Saints of the Lutheran Church on 14 August, alongside Maximilian Kolbe.