<SEC-DOCUMENT>0001558370-18-000063-index.html : 20180109
<SEC-HEADER>0001558370-18-000063.hdr.sgml : 20180109
<ACCEPTANCE-DATETIME>20180108191709
ACCESSION NUMBER:		0001558370-18-000063
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20180109
DATE AS OF CHANGE:		20180108

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NextDecade Corp.
		CENTRAL INDEX KEY:			0001612720
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
		IRS NUMBER:				465723951
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-222477
		FILM NUMBER:		18517575

	BUSINESS ADDRESS:	
		STREET 1:		3 WATERWAY SQUARE PLACE
		CITY:			THE WOODLANDS
		STATE:			TX
		ZIP:			77380
		BUSINESS PHONE:		832-403-1874

	MAIL ADDRESS:	
		STREET 1:		3 WATERWAY SQUARE PLACE
		CITY:			THE WOODLANDS
		STATE:			TX
		ZIP:			77380

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Harmony Merger Corp.
		DATE OF NAME CHANGE:	20140703
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>s-3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: s-3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>ex-5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: ex-5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>ex-23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: ex-23d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ex-5d1g001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: ex-5d1g001.jpg

</DOCUMENT>
</SEC-DOCUMENT>