v3.26.1
Cover Page - shares
3 Months Ended
Mar. 31, 2026
May 12, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-38512  
Entity Registrant Name ONCOLYTICS BIOTECH INC.  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 98-0541667  
Entity Address, Address Line One 4350 Executive Drive  
Entity Address, Address Line Two Suite 325  
Entity Address, City or Town San Diego  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92121  
City Area Code 403  
Local Phone Number 670-7377  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol ONCY  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock Shares Outstanding   119,354,067
Entity Central Index Key 0001129928  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Current Fiscal Year End Date --12-31