    <SEC-DOCUMENT>0001599901-25-000093-index.html : 20250429
    <SEC-HEADER>0001599901-25-000093.hdr.sgml : 20250429
    <ACCEPTANCE-DATETIME>20250429160441
    ACCESSION NUMBER:		0001599901-25-000093
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20250429
    DATE AS OF CHANGE:		20250429

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Avidity Biosciences, Inc.
    		CENTRAL INDEX KEY:			0001599901
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		ORGANIZATION NAME:           	03 Life Sciences
    		EIN:				461336960
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39321
    		FILM NUMBER:		25887074

    	BUSINESS ADDRESS:
    		STREET 1:		10578 SCIENCE CENTER DRIVE
    		STREET 2:		SUITE 125
    		CITY:			SAN DIEGO
    		STATE:			CA
    		ZIP:			92121
    		BUSINESS PHONE:		858-401-7900

    	MAIL ADDRESS:
    		STREET 1:		10578 SCIENCE CENTER DRIVE
    		STREET 2:		SUITE 125
    		CITY:			SAN DIEGO
    		STATE:			CA
    		ZIP:			92121

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Avidity Biosciences LLC
    		DATE OF NAME CHANGE:	20161227

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Avidity NanoMedicines LLC
    		DATE OF NAME CHANGE:	20140211
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>a2025schedule14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: a2025schedule14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>rnanotice-final_pagex1a.jpg
    <TEXT>
    Document 2 - file: rnanotice-final_pagex1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>rnanotice-final_pagex2a.jpg
    <TEXT>
    Document 3 - file: rnanotice-final_pagex2a.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>