Liaka Kusulaka (Greek: Λιακο Κοζουλο, Liako Kozoulo, on his coins, Pali: Liaka Kusulaka or Liako Kusuluko) was an Indo-Scythian satrap of the area of Chukhsa in the northwestern South Asia during the 1st century BCE.
He is mentioned in the Taxila copper plate inscription (Konow 1929: 23-29), dated between 90 and 6 BCE, as the father of Patika Kusulaka, and is characterized as a "kshaharata" (also the name of the first dynasty of the Western Satraps) and as kshatrapa of Chukhsa.
The name "Κοζουλο" was also used by the first Kushan ruler Kujula Kadphises (Greek: Κοζουλου Καδφιζου, Kozoulou Kadphizou or Κοζολα Καδαφες, Kozola Kadaphes), which may suggest some family connection.
- Rapson (1967), p. cvi
- Rapson, E. J. (1967). A Catalogue of the Indian Coins in the British Museum: Coins of the Andhra Dynasty, the Western ksatrapas, the Truikutaka dynasty and the 'Bodhi' Dynasty
- From the dated inscription on the Rukhana reliquary
- An Inscribed Silver Buddhist Reliquary of the Time of King Kharaosta and Prince Indravarman, Richard Salomon, Journal of the American Oriental Society, Vol. 116, No. 3 (Jul. - Sep., 1996), pp. 442 
- A Kharosthī Reliquary Inscription of the Time of the Apraca Prince Visnuvarma, by Richard Salomon, South Asian Studies 11 1995, Pages 27-32, Published online: 09 Aug 2010