Kiribati shares several Maritime Boundary Treaties with various States under UNCLOS. The treaties deposited to UN DOALOS are described below:
Treaty between Kiribati (Line Group) and Cook Islands
Agreement between the Government of the Cook Islands and the Government of the Republic of Kiribati concerning the Delimitation of Maritime Boundaries between the Cook Islands and the Republic of Kiribati, 29 August 2012 (entry into force: 17 January 2014; registration #: 51976; registration date: 13 June 2014
https://www.un.org/depts/los/LEGISLATIONANDTREATIES/PDFFILES/DEPOSIT/cok_mzn104_2014.pdf
Treaty between Kiribati (Phoenix Group) and New Zealand (Tokelau)
Agreement between the Government of New Zealand and the Government of the Republic of Kiribati concerning the delimitation of the maritime boundaries between Tokelau and Kiribati, 29 August 2012 (entry into force: 15 May 2015; registration #: 53058; date of registration: 18 November 2015
Treaty between Kiribati (Gilbert Group) and Tuvalu
Agreement between Tuvalu and Kiribati concerning their Maritime Boundary, done on 29 August 2012
https://www.un.org/depts/los/LEGISLATIONANDTREATIES/PDFFILES/DEPOSIT/tuv_mzn98_2013_AgreementBetweenTuvaluandKiribati.pdf