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Exhibit 12.1

Kosmos Energy Ltd.
Computation of Ratio of Earnings to Fixed Charges
(In thousands, except ratios)

				Years Ended December 31,
	Three Months Ended June 30, 2018
				2017			2016			2015			2014			2013
EARNINGS:
Add:
Income (loss) before income taxes	$	(223,192	)	$	(177,855	)	$	(294,564	)	$	85,436		$	578,268		$	75,954
Fixed charges		72,870			176,158			207,204			169,725			95,966			75,028
Amortization of capitalized interest		10,566			20,200			12,335			13,093			7,601			5,990
Less:
Capitalized interest		(14,112	)		(30,282	)		(59,803	)		(52,392	)		(20,577	)		(13,074	)
Earnings as defined	$	(68,664	)	$	(5,527	)	$	(134,828	)	$	215,862		$	661,258		$	143,898
FIXED CHARGES:
Interest Expense	$	51,688		$	101,095		$	95,700		$	79,956		$	53,208		$	49,885
Capitalized interest		14,112			30,282			59,803			52,392			20,577			13,074
Amortization—deferred financing costs		4,723			10,204			10,204			10,324			10,548			11,054
Interest component of rent expense(1)		2,347			34,577			41,497			27,053			11,633			1,015
Fixed Charges as defined	$	72,870		$	176,158		$	207,204		$	169,725		$	95,966		$	75,028
RATIO OF EARNINGS TO FIXED CHARGES(2)		N/A			N/A			N/A			1.3x			6.9x			1.9x

(1)

Represents the portion of rental expense that we believe to be representative of interest expense.

(2)

Earnings were inadequte to cover fixed charges by $141.5 million for the three months ended June 30, 2018 and $181.7 million and $342.0 million for the years ended December 31, 2017 and 2016, respectively.

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Exhibit 12.1

Kosmos Energy Ltd. Computation of Ratio of Earnings to Fixed Charges (In thousands, except ratios)