| Name | Website | Location | |
|---|---|---|---|
| OpinYon | opinyon.com.ph | Philippines | View publication |
| Oppiliappa automobiles Magazine | oauto.in | India | View publication |
| Opportimes Blog | opportimes.com | Mexico | View publication |
| Optical Connections Magazine | opticalconnectionsnews.com | United Kingdom | View publication |
| Optical Prism | opticalprism.ca | Canada | View publication |
| The Optical Society | osa.org | United States | View publication |
| Optical World | optical-world.co.uk | United Kingdom | View publication |
| Optician | opticianonline.net | United Kingdom | View publication |
| Optics and Photonics News | osa-opn.org | United States | View publication |
| The Optimist | acuoptimist.com | United States | View publication |