Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2020
Oct. 31, 2020
Cover [Abstract]    
Entity Registrant Name Monopar Therapeutics  
Entity Central Index Key 0001645469  
Document Type 10-Q  
Document Period End Date Sep. 30, 2020  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code DE  
Entity File Number 001-39070  
Is Entity's Reporting Status Current? Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Small Business true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   11,452,177
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020