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<ACCEPTANCE-DATETIME>20210408161749
ACCESSION NUMBER:		0001047469-21-000902
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		27
CONFORMED PERIOD OF REPORT:	20210518
FILED AS OF DATE:		20210408
DATE AS OF CHANGE:		20210408

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CyrusOne Inc.
		CENTRAL INDEX KEY:			0001553023
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35789
		FILM NUMBER:		21815115

	BUSINESS ADDRESS:	
		STREET 1:		2850 N HARWOOD ST
		STREET 2:		SUITE 2200
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
		BUSINESS PHONE:		(972) 350-0060

	MAIL ADDRESS:	
		STREET 1:		2850 N HARWOOD ST
		STREET 2:		SUITE 2200
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75201
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