<SEC-DOCUMENT>0001206774-14-000764-index.html : 20150727
<SEC-HEADER>0001206774-14-000764.hdr.sgml : 20150727

<ACCEPTANCE-DATETIME>20140305194728

<PRIVATE-TO-PUBLIC>

ACCESSION NUMBER:		0001206774-14-000764

CONFORMED SUBMISSION TYPE:	PRE 14A

PUBLIC DOCUMENT COUNT:		3

CONFORMED PERIOD OF REPORT:	20140417

FILED AS OF DATE:		20140306

DATE AS OF CHANGE:		20140328


FILER:


	COMPANY DATA:	

		COMPANY CONFORMED NAME:			Flaherty & Crumrine PREFERRED INCOME OPPORTUNITY FUND INC

		CENTRAL INDEX KEY:			0000882071

		IRS NUMBER:				954355600

		STATE OF INCORPORATION:			MD

		FISCAL YEAR END:			1130



	FILING VALUES:

		FORM TYPE:		PRE 14A

		SEC ACT:		1934 Act

		SEC FILE NUMBER:	811-06495

		FILM NUMBER:		14671063



	BUSINESS ADDRESS:	

		STREET 1:		301 E COLORADO BLVD STE 720

		STREET 2:		C/O FLAHERTY & CRUMRINE INC

		CITY:			PASADENA

		STATE:			CA

		ZIP:			91101

		BUSINESS PHONE:		(626) 795-7300



	MAIL ADDRESS:	

		STREET 1:		301 COLORADO BLVD STE 720

		STREET 2:		C/O FLAHERTY & CRUMRINE INC

		CITY:			PASADENA

		STATE:			CA

		ZIP:			91101



	FORMER COMPANY:	

		FORMER CONFORMED NAME:	PREFERRED INCOME OPPORTUNITY FUND INC

		DATE OF NAME CHANGE:	19920929



</SEC-HEADER>

<DOCUMENT>
<TYPE>PRE 14A
<SEQUENCE>1
<FILENAME>fcpiofi_pre14a.htm
<DESCRIPTION>PRELIMINARY PROXY STATEMENT
<TEXT>
Document 1 - file: fcpiofi_pre14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>transmittal_letterx1x1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: transmittal_letterx1x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>4
<FILENAME>filename4.htm
<TEXT>
Document 4 - file: filename4.htm

</DOCUMENT>
</SEC-DOCUMENT>