What is a 3rd Assistant Director?

What Is a 3rd Assistant Director?

The 3rd Assistant Director (3rd AD) is an essential member of the Assistant Director department on a film or television production. Working directly on set, the 3rd AD is the on-the-ground coordinator responsible for managing background artists (extras), maintaining order in the shooting environment, and acting as the critical link between the 2nd AD in the production office and the 1st AD on the studio floor.

While the 1st AD controls the overall flow of the shooting day and the 2nd AD manages paperwork, scheduling, and principal cast logistics from a base camp or production office, the 3rd AD is physically present wherever the camera is pointing — making sure every element of the scene is in place before the director calls action.

The AD Department Hierarchy

Understanding the 3rd AD's role requires understanding the full AD ladder. Productions vary in size, but the standard hierarchy runs:

• 1st Assistant Director (1st AD) — commands the set, runs the shooting day, coordinates all departments, and is directly accountable to the director and producer for schedule.
• 2nd Assistant Director (2nd AD) — manages the production office side: distributes call sheets, handles actor movements from holding to set, coordinates with the locations department, and supervises additional ADs.
• 3rd Assistant Director (3rd AD) — works on set with the 1st AD; primary responsibility is background artists and extras, set perimeter control (lockup), and PA supervision.
• Additional 3rd AD / Trainee AD — entry-level position, often supporting the 3rd AD with crowd management and runner duties.

On large studio productions, there may be multiple 3rd ADs assigned to different areas of the set — one managing crowd sequences in the main unit while another covers a secondary action zone. On smaller independent productions, a single 3rd AD may fold in duties from the 2nd AD as well.

DGA vs. Non-DGA Productions

In the United States, the Directors Guild of America (DGA) governs the terms of employment for Assistant Directors working on signatory productions. On a DGA shoot, the role equivalent to the 3rd AD is often titled Second Second Assistant Director (or "2nd 2nd AD"), as the DGA contract does not formally recognize a "3rd AD" title in the same way the UK industry does.

Non-DGA productions — including many independent films, low-budget features, student films, and non-union commercials — freely use the title "3rd Assistant Director" to describe the person whose primary set responsibility is extras management and on-set logistics support.

The distinction matters for pay scales and career progression. DGA productions mandate minimum rates, health and pension contributions, and specific credit protocols. Non-DGA productions operate under negotiated agreements or standard industry practice.

Where the 3rd AD Fits in Production

The 3rd AD role exists entirely during the principal photography phase of production. They are not typically involved in pre-production planning (that falls to the 1st and 2nd ADs) or post-production. Their value is concentrated in one place: the shooting set, every day, from the first setup to the final wrap of the shooting day.

Managing film and TV productions efficiently — from scheduling to expense tracking — requires tools built for the production environment. Saturation.io gives production teams a centralized platform to handle budgeting and financial logistics so that department heads like the AD team can focus on what matters most: the creative work on set.