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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerState>AR</rptOwnerState>
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            <otherText></otherText>
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                    <value>Class A Common Stock</value>
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        <derivativeTransaction>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <expirationDate>
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                <equitySwapInvolved>0</equitySwapInvolved>
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    <footnotes>
        <footnote id="F1">Represents shares of the Issuer's Class A Common Stock purchased for the Reporting Person's account under the Issuer's Employee Stock Purchase Plan since the last Statement of Changes in Beneficial Ownership was filed by the Reporting Person.  Such acquisitions are exempt from Section 16 concurrent reporting requirements pursuant to Rule 16b-3.</footnote>
        <footnote id="F2">Represents shares of the Issuer's Class A Common Stock received by the Reporting Person pursuant to the Issuer's dividend reinvestment plan since the last Statement of Changes in Beneficial Ownership was filed by the Reporting Person.  Such acquisitions are exempt from Section 16 concurrent reporting requirements pursuant to Rule 16a-11.</footnote>
        <footnote id="F3">Includes 22,019.9618 shares of Class A Common Stock which vested as described in footnote 6; 25,651.846 shares of Class A Common Stock which vest on the fourth business day following the filing of the Issuer's Annual Report on Form 10-K for its 2018 fiscal year if the performance metrics described in the applicable Stock Incentive Agreement are achieved; and, 21,775.704 shares of Class A Common Stock which vest on November 18, 2019 if the performance metrics described in the applicable Stock Incentive Agreement are achieved.</footnote>
        <footnote id="F4">On November 21, 2014 the Reporting Person received a grant of 68,142 performance shares which vested (in whole or in part) or expired on November 17, 2017 subject to the achievement of performance criteria in the applicable Stock Incentive Agreement. The performance criteria were (a) a cumulative adjusted earnings before interest and taxes (EBIT) target of $8,704 million for the 2015-2017 fiscal years and (b) a favorable comparison of the Issuer's Class A common stock price relative to the stock prices of a predetermined peer group of publicly traded companies over the 2015-2017 fiscal years. The performance shares could vest at a level of 50%-200% and were previously reported as derivative securities at the 200% level. On November 17, 2017, 60,781.11 shares vested and are reported herein as acquired non-derivatives securities and 7,360.89 shares expired.</footnote>
        <footnote id="F5">Pursuant to an election made by the Reporting Person, 27,512 shares were sold by the Reporting Person to the Issuer on November 17, 2017, to satisfy tax withholding obligations related to the vesting described in footnote 4.</footnote>
        <footnote id="F6">On November 17, 2017, 22,019.9618 shares of restricted Class A Common Stock vested. These shares were previously reported as beneficially owned by the Reporting Person. Pursuant to an election made by the Reporting Person, 9,520 shares were sold by the Reporting Person to the Issuer on November 17, 2017, to satisfy tax withholding obligations.</footnote>
        <footnote id="F7">Award of Class A Common Stock which vests on November 13, 2020 if the performance metric described in the applicable Stock Incentive Agreement (the Incentive Agreement) are achieved and the Reporting Person is employed by the Issuer on the vesting date. The performance metrics are achievement of a three year (fiscal 2018-2020) cumulative EBIT target as set forth in the Incentive Agreement.  If the performance metric is not achieved, the award expires.</footnote>
        <footnote id="F8">Includes 25,651.846 shares of Class A Common Stock which vest on the fourth business day following the filing of the Issuer's Annual Report on Form 10-K for its 2018 fiscal year if the performance metrics described in the applicable Stock Incentive Agreement are achieved; 21,775.704 shares of Class A Common Stock which vest on November 18, 2019 if the performance metrics described in the applicable Stock Incentive Agreement are achieved; and, 16,833.397 shares of Class A Common Stock which vest on November 13, 2020 if the performance metrics described in the applicable Stock Incentive Agreement are achieved.</footnote>
        <footnote id="F9">The stock options vest at 33 1/3% on each of the first, second, and third anniversary dates of the grant.</footnote>
        <footnote id="F10">Award of performance Class A Common Stock which vests on November 13, 2020 if the performance metrics described in the applicable Stock Incentive Agreement are achieved. The performance criteria set forth in the Stock Incentive Agreement are (1) achievement of a three year (fiscal 2018-2020) cumulative EBIT target and (2) a favorable comparison of the relative total shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over a three year (fiscal 2018-2020 ) period. Subject to the achievement of the performance criteria, the performance shares could vest at a level of 50 percent to 200 percent and are reported as derivative securities at the 200 percent level. If neither of the performance criteria is achieved, the award expires.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ R. Read Hudson by Power of Attorney for John H. Tyson</signatureName>
        <signatureDate>2017-11-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2017-09-18
0
0000100493
TYSON FOODS INC
TSN
0001019032
TYSON JOHN H
2200 W DON TYSON PARKWAY
SPRINGDALE
AR
72762
1
1
0
0
Chairman of the Board
Class A Common Stock
2017-09-18
4
J
0
1636.79
0
A
116468.7557
I
Employee Stock Purchase Plan
Class A Common Stock
2017-09-19
4
J
0
1219.4055
0
A
2410177.3017
D
Class A Common Stock
2017-11-17
4
M
0
60781.11
0
A
2470958.4117
D
Class A Common Stock
2017-11-17
4
J
0
27512
0
D
2443446.4117
D
Class A Common Stock
2017-11-17
4
J
0
9520
0
D
2433926.4117
D
Class A Common Stock
2017-11-17
4
A
0
16833.397
0
A
2450759.8087
D
Performance Shares
2017-11-17
4
M
0
68142
0
D
Class A Common Stock
68142.0
0
D
Non-Qualified Stock Options (Right to Buy)
77.97
2017-11-17
4
A
0
71997
77.97
A
2018-11-17
2027-11-17
Class A Common Stock
71997.0
71997
D
Performance Shares
2017-11-21
4
A
0
67333.59
A
Class A Common Stock
67333.59
67333.59
D
Represents shares of the Issuer's Class A Common Stock purchased for the Reporting Person's account under the Issuer's Employee Stock Purchase Plan since the last Statement of Changes in Beneficial Ownership was filed by the Reporting Person.  Such acquisitions are exempt from Section 16 concurrent reporting requirements pursuant to Rule 16b-3.
Represents shares of the Issuer's Class A Common Stock received by the Reporting Person pursuant to the Issuer's dividend reinvestment plan since the last Statement of Changes in Beneficial Ownership was filed by the Reporting Person.  Such acquisitions are exempt from Section 16 concurrent reporting requirements pursuant to Rule 16a-11.
Includes 22,019.9618 shares of Class A Common Stock which vested as described in footnote 6; 25,651.846 shares of Class A Common Stock which vest on the fourth business day following the filing of the Issuer's Annual Report on Form 10-K for its 2018 fiscal year if the performance metrics described in the applicable Stock Incentive Agreement are achieved; and, 21,775.704 shares of Class A Common Stock which vest on November 18, 2019 if the performance metrics described in the applicable Stock Incentive Agreement are achieved.
On November 21, 2014 the Reporting Person received a grant of 68,142 performance shares which vested (in whole or in part) or expired on November 17, 2017 subject to the achievement of performance criteria in the applicable Stock Incentive Agreement. The performance criteria were (a) a cumulative adjusted earnings before interest and taxes (EBIT) target of $8,704 million for the 2015-2017 fiscal years and (b) a favorable comparison of the Issuer's Class A common stock price relative to the stock prices of a predetermined peer group of publicly traded companies over the 2015-2017 fiscal years. The performance shares could vest at a level of 50%-200% and were previously reported as derivative securities at the 200% level. On November 17, 2017, 60,781.11 shares vested and are reported herein as acquired non-derivatives securities and 7,360.89 shares expired.
Pursuant to an election made by the Reporting Person, 27,512 shares were sold by the Reporting Person to the Issuer on November 17, 2017, to satisfy tax withholding obligations related to the vesting described in footnote 4.
On November 17, 2017, 22,019.9618 shares of restricted Class A Common Stock vested. These shares were previously reported as beneficially owned by the Reporting Person. Pursuant to an election made by the Reporting Person, 9,520 shares were sold by the Reporting Person to the Issuer on November 17, 2017, to satisfy tax withholding obligations.
Award of Class A Common Stock which vests on November 13, 2020 if the performance metric described in the applicable Stock Incentive Agreement (the Incentive Agreement) are achieved and the Reporting Person is employed by the Issuer on the vesting date. The performance metrics are achievement of a three year (fiscal 2018-2020) cumulative EBIT target as set forth in the Incentive Agreement.  If the performance metric is not achieved, the award expires.
Includes 25,651.846 shares of Class A Common Stock which vest on the fourth business day following the filing of the Issuer's Annual Report on Form 10-K for its 2018 fiscal year if the performance metrics described in the applicable Stock Incentive Agreement are achieved; 21,775.704 shares of Class A Common Stock which vest on November 18, 2019 if the performance metrics described in the applicable Stock Incentive Agreement are achieved; and, 16,833.397 shares of Class A Common Stock which vest on November 13, 2020 if the performance metrics described in the applicable Stock Incentive Agreement are achieved.
The stock options vest at 33 1/3% on each of the first, second, and third anniversary dates of the grant.
Award of performance Class A Common Stock which vests on November 13, 2020 if the performance metrics described in the applicable Stock Incentive Agreement are achieved. The performance criteria set forth in the Stock Incentive Agreement are (1) achievement of a three year (fiscal 2018-2020) cumulative EBIT target and (2) a favorable comparison of the relative total shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over a three year (fiscal 2018-2020 ) period. Subject to the achievement of the performance criteria, the performance shares could vest at a level of 50 percent to 200 percent and are reported as derivative securities at the 200 percent level. If neither of the performance criteria is achieved, the award expires.
/s/ R. Read Hudson by Power of Attorney for John H. Tyson
2017-11-21