| Name | Also Known As | Twitter Handle | Presentations |
|---|---|---|---|
| Michael Aday | 1 | ||
| Mike Aday | 1 | ||
| Patricio Mac Adden | 1 | ||
| Chris Addis | 1 | ||
| Ola Adedoyin | 1 | ||
| Erika Brooks Adickman | ThisErikaLife | 1 | |
| Jim Adler | 2 | ||
| Mike Adolphs | fooforge | 1 | |
| Christopher Aedo | 3 | ||
| Sylvain Afchain | s_afchain | 2 | |
| Vladimir Agafonkin | mourner | 1 | |
| Nitin Agarwal | 1 | ||
| Anmol Agarwal | anmol1771 | 1 | |
| Akanksha Agarwal | AkankshaHA | 1 | |
| Rohit Agarwalla | rohitagarwalla | 1 | |
| Peter Agnew | 1 | ||
| Shishir Agrawal | 1 | ||
| Anand Agrawal | 2 | ||
| Arun Agrawal | 1 | ||
| Bruno Aguirre | 1 | ||
| Aron Ahmadia | 5 | ||
| Abu Shohel Ahmed | 1 | ||
| Shadab Ahmed | 2 | ||
| Joey Aiello | joeyaiello | 1 | |
| Matt Aimonetti | merbist | 10 |