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Discover the 20 Top Fitness Influencers on Instagram in 2025! From gym influencers to female fitness icons, these top fitness influencers inspire healthier lifestyles and create big opportunities for brands and fitness enthusiasts alike.

Instagram's Top Fitness Influencers

Instagram’s Top Fitness Influencers

Explore the 20 leading fitness influencers to follow on Instagram in 2025! These trailblazers not only inspire healthier, more active lifestyles but also offer exceptional opportunities for brands. A true destination for fitness enthusiasts around the globe!

Looking for the best in the industry? We’ve identified 61.2K fitness influencers with “fitness” in their bios or featured in their posts. This list highlights the top gym influencers, ranked by follower count, including many inspiring female fitness influencers making waves in the fitness community. 

Want to refine your search to find fitness influencers by country, target audience, or even the fastest-growing accounts? Try Lefty for free and connect with the perfect influencers for your brand!

The Top Instagram Fitness Influencers

Chris Bumstead, a renowned Canadian bodybuilder, has significantly impacted the fitness community on Instagram. With over 26 million followers, he shares his training, nutrition, and lifestyle, establishing himself as a leading gym influencer. In 2018, he partnered with Gymshark, later becoming a part-owner and athlete for the brand in 2024. Through authentic content and strategic collaborations, Chris has cemented his place as a top fitness influencer, inspiring millions in the gym and fitness world.

@cbum

Michelle Lewin, a fitness model and bodybuilder originally from Venezuela, has risen to prominence as one of Instagram's top fitness influencers. Boasting over 15 million followers, she provides value to her audience through workout routines, nutritional guidance, and motivational content designed to promote healthier lifestyles. As a leading female fitness influencer, her collaborations with health-focused brands, such as the athletic wear company One0One, reflect her commitment to wellness and align with the interests of her global community.

@michelle_lewin

​Kayla Itsines is an Australian personal trainer, author, and entrepreneur, renowned for her influential presence in the fitness industry. She co-created the Bikini Body Guides and the fitness app Sweat with Kayla, which became the highest-grossing fitness app in 2016. With nearly 16 million followers on Instagram, Itsines is recognized as one of the top female fitness influencers, inspiring women globally with her effective workout programs and motivational content. ​

@kayla_itsines

Find the perfect fitness influencer for your next campaign

The Top 20 Fitness Influencers of Instagram

Whether you're a brand seeking impactful partnerships or a fitness enthusiast looking for daily inspiration, these top fitness influencers are leading the charge in 2025. From gym influencers like Chris Bumstead redefining performance and authenticity to female fitness influencers like Michelle Lewin and Kayla Itsines empowering global communities, each profile highlights the diverse and dynamic world of fitness influencers on Instagram. Their influence goes beyond workouts—they shape trends, promote healthier lifestyles, and open up exciting opportunities for brands in the wellness space. As the online fitness community continues to grow, these fitness influencers will remain essential voices in shaping what’s next.

Instagram's Top Fitness Influencers

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