UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM N-1A

File No. 033-00442
File No. 811-04413

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		/X/
	Pre-Effective Amendment No.   _______	/   /
	Post-Effective Amendment No.  45	/X/
			and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940		/X/
	Amendment No.        45

(Check appropriate box or boxes.)

DELAWARE GROUP EQUITY FUNDS IV

(Exact Name of Registrant as Specified in Charter)

2005 Market Street, Philadelphia, Pennsylvania	19103-7094
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, including Area Code: (800) 523-1918

David F. Connor, Esq., 2005 Market Street, Philadelphia, PA 19103-7094

(Name and Address of Agent for Service)

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 (b)
/  /	60 days after filing pursuant to paragraph (a)(1)
/  /	on (date) pursuant to paragraph (a)(1)
/  /	75 days after filing pursuant to paragraph (a)(2)
/  /	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.

SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, 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 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Philadelphia and Commonwealth of Pennsylvania on this 17th day of February, 2011.

DELAWARE GROUP EQUITY FUNDS IV
By:	/s/ Patrick P. Coyne
	Patrick P. Coyne
	Chairman/President/Chief Executive Officer

       Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated:

Signature		Title	Date
/s/ Patrick P. Coyne		Chairman/President/Chief Executive Officer	February 17, 2011
Patrick P. Coyne		(Principal Executive Officer) and Trustee
Thomas L. Bennett	*	Trustee	February 17, 2011
Thomas L. Bennett
John A. Fry	*	Trustee	February 17, 2011
John A. Fry
Anthony D. Knerr	*	Trustee	February 17, 2011
Anthony D. Knerr
Lucinda S. Landreth	*	Trustee	February 17, 2011
Lucinda S. Landreth
Ann R. Leven	*	Trustee	February 17, 2011
Ann R. Leven
Thomas F. Madison	*	Trustee	February 17, 2011
Thomas F. Madison
Janet L. Yeomans	*	Trustee	February 17, 2011
Janet L. Yeomans
J. Richard Zecher	*	Trustee	February 17, 2011
J. Richard Zecher
Richard Salus	*	Senior Vice President/Chief Financial Officer	February 17, 2011
Richard Salus		(Principal Financial Officer)

*By:	/s/ Patrick P. Coyne
Patrick P. Coyne
as Attorney-in-Fact for
each of the persons indicated
(Pursuant to Powers of Attorney previously filed)

INDEX TO EXHIBITS
(Delaware Group® Equity Funds IV)

Exhibit No.	Exhibit
EX-1-101.INS	XBRL Instance Document
EX-1-101.SCH	XBRL Taxonomy Extension Schema Document
EX-1-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-1-101.LAB	XBRL Taxonomy Extension Labels Linkbase
EX-1-101.PRE	XBRL Taxonomy Extension Presentation Linkbase