<SEC-DOCUMENT>0000950170-22-012259-index.html : 20220628
<SEC-HEADER>0000950170-22-012259.hdr.sgml : 20220628
<ACCEPTANCE-DATETIME>20220628143021
ACCESSION NUMBER:		0000950170-22-012259
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20211231
FILED AS OF DATE:		20220628
DATE AS OF CHANGE:		20220628

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADTRAN INC
		CENTRAL INDEX KEY:			0000926282
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		IRS NUMBER:				630918200
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24612
		FILM NUMBER:		221049102

	BUSINESS ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806
		BUSINESS PHONE:		256-963-8220

	MAIL ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>adtn-_2021_11-k.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: adtn-_2021_11-k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>adtn-ex23_1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 2 - file: adtn-ex23_1.htm

</DOCUMENT>
</SEC-DOCUMENT>