| Name | Also Known As | Twitter Handle | Presentations |
|---|---|---|---|
| Porpentine | aliendovecote | 1 | |
| Keith | ktec | 1 | |
| Xdite | xdite | 1 | |
| HariKrishnan | 1 | ||
| Sam Aaron | samaaron | 1 | |
| Dag-Inge Aas | 1 | ||
| Mehdi Abaakouk | sileht | 1 | |
| Charles Abbott | cwabbott | 1 | |
| Safia abdalla | 2 | ||
| Moe Abdula | 3 | ||
| Shinji Abe | 1 | ||
| Sylvain Abélard | abelar_s | 1 | |
| Meno Abels | fastandfearless | 1 | |
| Liz Abenante | feministy | 1 | |
| Dan Abend | 1 | ||
| Andi Abes | 1 | ||
| Mike AbiEzzi | mjezzi | 1 | |
| Liz Abinante | feministy | 6 | |
| Feross Aboukhadijeh | 1 | ||
| Yoav Abrahami | 1 | ||
| Joseph Abrahamson | sdbo | 2 | |
| Howard Abrams | 1 | ||
| Amelia Abreu | ameliaabreu | 3 | |
| Anthony Accomazzo | accomazzo | 0 | |
| Pushkar Acharya | 1 |