    <SEC-DOCUMENT>0000040211-15-000041-index.html : 20150805
    <SEC-HEADER>0000040211-15-000041.hdr.sgml : 20150805
    <ACCEPTANCE-DATETIME>20150805155902
    ACCESSION NUMBER:		0000040211-15-000041
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		17
    CONFORMED PERIOD OF REPORT:	20150805
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20150805
    DATE AS OF CHANGE:		20150805

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GATX CORP
    		CENTRAL INDEX KEY:			0000040211
    		STANDARD INDUSTRIAL CLASSIFICATION:	TRANSPORTATION SERVICES [4700]
    		IRS NUMBER:				361124040
    		STATE OF INCORPORATION:			NY
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-02328
    		FILM NUMBER:		151028884

    	BUSINESS ADDRESS:
    		STREET 1:		222 WEST ADAMS STREET
    		CITY:			CHICAGO
    		STATE:			X1
    		ZIP:			60606-5314
    		BUSINESS PHONE:		3126216200

    	MAIL ADDRESS:
    		STREET 1:		222 WEST ADAMS STREET
    		CITY:			CHICAGO
    		STATE:			X1
    		ZIP:			60606-5314

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GENERAL AMERICAN TRANSPORTATION CORP
    		DATE OF NAME CHANGE:	19750722
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>gmt201508068-kbylawamendme.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: gmt201508068-kbylawamendme.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>exhibit31.htm
    <DESCRIPTION>EXHIBIT 3.1
    <TEXT>
    Document 2 - file: exhibit31.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>exhibit31001.jpg
    <TEXT>
    Document 3 - file: exhibit31001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>exhibit31002.jpg
    <TEXT>
    Document 4 - file: exhibit31002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>exhibit31003.jpg
    <TEXT>
    Document 5 - file: exhibit31003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>exhibit31004.jpg
    <TEXT>
    Document 6 - file: exhibit31004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>exhibit31005.jpg
    <TEXT>
    Document 7 - file: exhibit31005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>exhibit31006.jpg
    <TEXT>
    Document 8 - file: exhibit31006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>exhibit31007.jpg
    <TEXT>
    Document 9 - file: exhibit31007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>exhibit31008.jpg
    <TEXT>
    Document 10 - file: exhibit31008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>exhibit31009.jpg
    <TEXT>
    Document 11 - file: exhibit31009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>exhibit31010.jpg
    <TEXT>
    Document 12 - file: exhibit31010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>exhibit31011.jpg
    <TEXT>
    Document 13 - file: exhibit31011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>exhibit31012.jpg
    <TEXT>
    Document 14 - file: exhibit31012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>exhibit31013.jpg
    <TEXT>
    Document 15 - file: exhibit31013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>exhibit31014.jpg
    <TEXT>
    Document 16 - file: exhibit31014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>exhibit31015.jpg
    <TEXT>
    Document 17 - file: exhibit31015.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>