    <SEC-DOCUMENT>0000036966-18-000015-index.html : 20180413
    <SEC-HEADER>0000036966-18-000015.hdr.sgml : 20180413
    <ACCEPTANCE-DATETIME>20180413063634
    ACCESSION NUMBER:		0000036966-18-000015
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		26
    CONFORMED PERIOD OF REPORT:	20180413
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180413
    DATE AS OF CHANGE:		20180413

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST HORIZON NATIONAL CORP
    		CENTRAL INDEX KEY:			0000036966
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				620803242
    		STATE OF INCORPORATION:			TN
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15185
    		FILM NUMBER:		18753120

    	BUSINESS ADDRESS:
    		STREET 1:		165 MADISON AVENUE
    		CITY:			MEMPHIS
    		STATE:			TN
    		ZIP:			38103
    		BUSINESS PHONE:		9018186232

    	MAIL ADDRESS:
    		STREET 1:		165 MADISON AVENUE
    		CITY:			MEMPHIS
    		STATE:			TN
    		ZIP:			38103

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST TENNESSEE NATIONAL CORP
    		DATE OF NAME CHANGE:	19920703

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST TENNESSEE BANKS INC
    		DATE OF NAME CHANGE:	19600201
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a1q18financialsupplement8-.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a1q18financialsupplement8-.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a1q18financialsupplementdo.htm
    <DESCRIPTION>EXHIBIT 99.1 FINANCIAL SUPPLEMENT
    <TEXT>
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    <SEQUENCE>3
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    <DESCRIPTION>EXHIBIT 99.2 INVESTOR SLIDES
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    <TEXT>
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