PADI is undeniably the world's foremost organisation for those who are serious about their diving.
The list represents other popular dive agencies found around the world:
The table below shows scuba training agencies and their PADI equivalent graded certification.
| BSAC | PADI Equivalent |
| Ocean Diver or Club Diver | Open Water Diver |
| Sport Diver | Open Water Diver |
| Sport Diver with at least 20 logged dives | Advanced Open Water Diver |
| Dive Leader | Rescue Diver |
| Advanced Diver | Divemaster or IDC Candidate |
| Club Instructor | IDC Candidate |
| Open Water Instructor | IDC Candidate |
| Advanced Instructor | IDC Candidate |
| SSI | PADI Equivalent |
| SSI Open Water | Open Water Diver |
| SSI Advanced Open Water | Advanced Open Water |
| SSI Stress and Rescue Techniques | Rescue Diver |
| SSI Master Diver | Rescue Diver |
| SSI Dive Con | Divemaster |
| SSI Master Diver | Rescue Diver |
| SSI Open Water / Dive Con Instructor | IDC Candidate if instructor certified for 6 months |
| CMAS | PADI Equivalent |
| CMAS 1 Star Diver | Open Water Diver |
| CMAS 2 Star Diver (with Night and Navigation) | Rescue Diver |
| CMAS 3 Star Diver | Divemaster or IDC Candidate |
| CMAS 1 Star Instructor | IDC Candidate |
| CMAS 2 Star Instructor | IDC Candidate |
| SSI | PADI Equivalent |
| SSI Open Water | Open Water Diver |
| SSI Advanced open Water | Advanced Open Water Diver |
| SSI Stress and Rescue Techniques | Rescue Diver |
| SSI Master Diver | Rescue Diver |
| SSI Dive Con | Divemaster |
| SSI O/W / Dive Con Instructor | IDC Candidate (instructor certified for 6 months) |
| NAUI | PADI Equivalent |
| NAUI Scuba Diver | Open Water Diver |
| Advanced Scuba Diver | Advanced Open Water Diver |
| NAUI Master Scuba Diver | Rescue Diver |
| NAUI Divemaster | Divemaster |
| Scuba Instructor | IDC Candidate |
| SAA | PADI Equivalent |
| Club Diver | Open Water Diver |
| Club Diver (20 dives + Deep and Navigation) | Advanced Open Water Diver |
| Dive Leader (with 20 logged dives) | Advanced Open Water Diver |
| Dive Leader (with Diver Rescue) | Rescue Diver |
| Dive Supervisor (with Diver Rescue) | Divemaster |
| Assistant and Club Instructor (+ Diver Rescue) | IDC Candidate |
| SAA Regional Instructor | IDC Candidate |