<SEC-DOCUMENT>0001287695-15-000089-index.html : 20150327
<SEC-HEADER>0001287695-15-000089.hdr.sgml : 20150327
<ACCEPTANCE-DATETIME>20150327120638
ACCESSION NUMBER:		0001287695-15-000089
CONFORMED SUBMISSION TYPE:	NSAR-A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150131
FILED AS OF DATE:		20150327
DATE AS OF CHANGE:		20150327
EFFECTIVENESS DATE:		20150327

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BlackRock Build America Bond Trust
		CENTRAL INDEX KEY:			0001493683
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0731

	FILING VALUES:
		FORM TYPE:		NSAR-A
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22426
		FILM NUMBER:		15729792

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
</SEC-HEADER>
<DOCUMENT>
<TYPE>NSAR-A
<SEQUENCE>1
<FILENAME>buildamericabond.fil
<TEXT>
Document 1 - file: buildamericabond.fil

</DOCUMENT>
</SEC-DOCUMENT>