<SEC-DOCUMENT>0000887147-18-000004-index.html : 20180427
<SEC-HEADER>0000887147-18-000004.hdr.sgml : 20180427
<ACCEPTANCE-DATETIME>20180427110748
ACCESSION NUMBER:		0000887147-18-000004
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20180427
DATE AS OF CHANGE:		20180427
EFFECTIVENESS DATE:		20180427

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			T. Rowe Price Mid-Cap Growth Fund, Inc.
		CENTRAL INDEX KEY:			0000887147
		IRS NUMBER:				521784828
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		497K
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-47806
		FILM NUMBER:		18781744

	BUSINESS ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		410-345-2000

	MAIL ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PRICE T ROWE MID CAP GROWTH FUND INC
		DATE OF NAME CHANGE:	19920717
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000887147
<SERIES-ID>S000002102
<SERIES-NAME>T. Rowe Price Mid-Cap Growth Fund, Inc.
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005470
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Growth Fund, Inc.
<CLASS-CONTRACT-TICKER-SYMBOL>RPMGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005471
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Growth Fund-Advisor Class
<CLASS-CONTRACT-TICKER-SYMBOL>PAMCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005472
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Growth Fund-R Class
<CLASS-CONTRACT-TICKER-SYMBOL>RRMGX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000159676
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Growth Fund-I Class
<CLASS-CONTRACT-TICKER-SYMBOL>RPTIX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>mcgpta-may50.htm
<TEXT>
Document 1 - file: mcgpta-may50.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>img_d0e9edf912354.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: img_d0e9edf912354.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>img_107a1976955c4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: img_107a1976955c4.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>img_1772887bdcfd4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: img_1772887bdcfd4.jpg

</DOCUMENT>
</SEC-DOCUMENT>