25 Advertising Internships in Rancho Cucamonga, CA

Updated daily. Most recent posting: June 13, 2026.

Panther Newspaper Creative Director

The Creative Director oversees the visual presentation and editorial layout for the Panther Newspaper across both print and digital platforms. This role involves leading design processes and ensuring consistent creative direction for all published content....

Orange, California Chapman University
Sales Intern

We’re currently seeking a driven and ambitious Sales Intern to join our Riverside team and gain hands-on experience in a fast-paced, people-focused environment. As a Sales Intern, you’ll represent leading telecommunications brands in retail and event-based settings, engaging directly with customers....

Riverside, California Ascend Marketing
Advertising Operations Internship

The Advertising Operations Intern will support the campaign management team by trafficking ad tags, monitoring campaign pacing, and performing quality assurance on digital creatives. This role involves working directly within ad tech stacks like Google Ad Manager to ensure successful campaign delive...

Irvine, California ODK Media
Entry Level Marketing Internship

Empire Elite Marketing is seeking enthusiastic and motivated individuals to join our team for Summer 2026 as Marketing Interns / Entry-Level Representatives. What You’ll Do: What We’re Looking For: Paid training and ongoing mentorshipWeekly pay + performance-based bonusesOpportunities for career adv...

Riverside, California Empire Elite Marketing
Marketing Internship - 2

You’ll work on the front end of the business—researching opportunities, organizing prospect data, and supporting outreach efforts. This is a practical, execution-focused role designed to build real business skills. Please know this is an_ internship_ with a path to Full-Time, Part-Time, or Contract ...

Riverside, California D.A.M. Good Video Co.
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