Exhibit 12.1

CORNING INCORPORATED AND SUBSIDIARY COMPANIES

COMPUTATION OF RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED DIVIDENDS

(In millions, except ratios)

	31-Mar 2018			31-Dec 2017			31-Dec 2016			31-Dec 2015			31-Dec 2014			31-Dec 2013
Income before income taxes		(465	)		1,657			3,692			1,486			3,568			2,473
Adjustments:
Equity earnings of equity affiliates		(39	)		(361	)		(284	)		(299	)		(266	)		(547	)
Distributed income of equity affiliates (1)		0			201			85			143			1,704			629
Net Income attributable to noncontrolling interest		4			18			10			10			3			0
Amortization of capitalized interest		0			0			0			0			0
Fixed charges net of capitalized interest		64			199			195			171			159			148
Income (loss) from continuing operations before taxes and fixed charges as adjusted		(436	)		1,714			3,698			1,511			5,168			2,703
Fixed charges:
Interest expense included in income (loss)		63			187			179			172			160			153
Portion of rent expense which represents interest factor (2)		12			44			35			31			36			28
Amortization of debt costs		1			4			4			3			3			2
Total fixed charges		76			235			218			206			199			183
Capitalized interest		(12	)		(36	)		(23	)		(35	)		(40	)		(35	)
Total fixed charges net of capitalized interest		64			199			195			171			159			148
Total fixed charges		76			235			218			206			199			183
Preferred stock dividends grossed up to a pre-tax basis		0			0			98			109			136			—
Combined fixed charges and preferred stock dividends		76			235			316			315			335			183
Ratio of earnings to fixed charges		N/A	1		7.3x			17.0x			7.3x			26.0x			14.8x

(1) In 2014, includes a $1.6 billion dividend received from Samsung Corning Precision Materials related to the acquisition of Samsung Corning Precision Materials.

(2) One-third of net rent expense is the portion deemed representative of the interest factor.

(N/A¹) The earnings to fixed charges ratio is negative because of the net loss before income taxes. The total dollar amount of the deficiency required to attain a ratio of one-to-one is $512 million.