As filed with the Securities and Exchange Commission on March 19, 2015

1933 Act Registration No. 033-16905

1940 Act Registration No. 811-05309

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	¨
Pre-Effective Amendment No.	¨
Post-Effective Amendment No. 172	þ
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
Amendment No. 172	þ

Nuveen Investment Funds, Inc.

(Exact Name of Registrant as Specified in Charter)

333 West Wacker Drive

Chicago, IL 60606

(Address of Principal Executive Offices) (Zip Code)

(312) 917-7700

(Registrant’s Telephone Number, Including Area Code):

Kevin J. McCarthy Vice President and Secretary 333 West Wacker Drive Chicago, Illinois 60606
(Name and Address of Agent for Service) Copies to: Eric F. Fess Chapman and Cutler LLP 111 West Monroe Street Chicago, Illinois 60603

Approximate Date of Proposed Public Offering: As soon as practicable after effectiveness.

Title of Securities Being Registered: Common Stock.

It is proposed that this filing will become effective (check appropriate box):

x	immediately upon filing pursuant to paragraph (b)	¨	on (date) pursuant to paragraph (a)(1)
¨	on (date) pursuant to paragraph (b)	¨	75 days after filing pursuant to paragraph (a)(2)
¨	60 days after filing pursuant to paragraph (a)(1)	¨	on (date) pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

¨ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This filing relates solely to the following Funds, each a series of the Registrant:

Nuveen Dividend Value Fund

Nuveen Equity Index Fund

Nuveen Large Cap Growth Opportunities Fund

Nuveen Large Cap Select Fund

Nuveen Mid Cap Growth Opportunities Fund

Nuveen Mid Cap Index Fund

Nuveen Mid Cap Value Fund

Nuveen Small Cap Growth Opportunities Fund

Nuveen Small Cap Index Fund

Nuveen Small Cap Select Fund

Nuveen Small Cap Value Fund

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) under the Securities Act of 1933, as amended, and has duly caused this post-effective amendment to its registration statement to be signed on its behalf by the undersigned, duly authorized, in the City of Chicago and State of Illinois, on the 19th day of March, 2015.

NUVEEN INVESTMENT FUNDS, INC.
By:	/s/    KEVIN J. MCCARTHY
	Kevin J. McCarthy
	Vice President and Secretary

Pursuant to the requirements of the Securities Act of 1933, as amended, this post-effective amendment to the registration statement has been signed below by the following persons in the capacities and on the date indicated.

Signature	Title			Date
/s/    STEPHEN D. FOY         STEPHEN D. FOY	Vice President and Controller (principal financial and accounting officer)			March 19, 2015
/s/    GIFFORD R. ZIMMERMAN         GIFFORD R. ZIMMERMAN	Chief Administrative Officer (principal executive officer)			March 19, 2015
WILLIAM J. SCHNEIDER*	Chairman of the Board and Director	ü ï ï ï ï ï ï ï ï ï ï ï ï ï ï þ ï ï ï ï ï ï ï ï ï ï ï ï ï ï ï þ	By:	/S/    KEVIN J. MCCARTHY KEVIN J. MCCARTHY Attorney-in-Fact March 19, 2015
WILLIAM ADAMS IV*	Director
JACK B. EVANS*	Director
WILLIAM C. HUNTER*	Director
DAVID J. KUNDERT*	Director
JOHN K. NELSON*	Director
THOMAS S. SCHREIER, JR.*	Director
JUDITH M. STOCKDALE*	Director
CAROLE E. STONE*	Director
VIRGINIA L. STRINGER*	Director
TERENCE J. TOTH*	Director

* An original power of attorney authorizing, among others, Kevin J. McCarthy and Gifford R. Zimmerman to execute this registration statement, and amendments thereto, for each of the directors of the Registrant on whose behalf this registration statement is filed, has been executed and has previously been filed with the Securities and Exchange Commission and is incorporated by reference herein.

EXHIBIT INDEX

Exhibit Number		Exhibit
	101.INS	XBRL Instance Document
	101.SCH	XBRL Taxonomy Extension Schema Document
	101.CAL	XBRL Taxonomy Extension Calculation Linkbase
	101.DEF	XBRL Taxonomy Extension Definition Linkbase
	101.LAB	XBRL Taxonomy Extension Labels Linkbase
	101.PRE	XBRL Taxonomy Extension Presentation Linkbase