Cover	9 Months Ended
	Sep. 30, 2021
Entity Addresses [Line Items]
Document Type	S-1/A
Amendment Flag	true
Amendment Description	Pre-Effective Amendment No. 2
Entity Registrant Name	theMaven, Inc.
Entity Central Index Key	0000894871
Entity Tax Identification Number	68-0232575
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	200 Vesey Street
Entity Address, Address Line Two	24th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10281
City Area Code	(212)
Local Phone Number	321-5002
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Business Contact [Member]
Entity Addresses [Line Items]
Entity Address, Address Line One	200 Vesey Street
Entity Address, Address Line Two	24th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10281
Contact Personnel Name	Ross Levinsohn