Kaj Leo í Bartalsstovu (born 23 June 1991) is a Faroese professional footballer who plays for Icelandic club Njarðvík.

Bartalsstovu started his career at Víkingur Gøta where he played 102 times, scoring 23 goals in the process.

[7] On 14 February 2016, Bartalsstovu made his first team debut for Dinamo București in a 1–0 win against FC Botosani, on 20 May Kaj Leo was released from his contract with Dinamo Bucuresti, after the previous manager stepped down, he later signed for FH.

[8] After a short stint with ÍBV which included an Icelandic Men's Football Cup win, Bartalsstovu signed for Reykjavík outfit Valur in 2019.

[9] Bartalsstovu has represented the Faroe Islands at international level, making his first start against Hungary in the UEFA 2016 Qualifiers on 8 October 2015.