- Rand Fishkin – Co-founded Moz, a company that initially focused exclusively on SEO. Rand has been in this field practically since its inception. Fishkin became especially known for Whiteboard Friday—an educational and entertaining YouTube show about SEO, with weekly appearances.

2.Brian Dean is the mastermind behind Backlinko.com, a highly valuable resource for SEO beginners as well as intermediate and advanced specialists. His case studies are highly appreciated and eagerly awaited in the digital marketing community. His articles are in-depth, educational, and easy to consume, covering both on-page SEO and creative off-page SEO strategies.
3. Gary Illyesworks as a Webmaster Trends Analyst at Google. He often answers webmasters' questions about SEO quite directly, making him an important influencer to follow.

4. John Mueller is a Senior Webmaster Trends Analyst at Google and works on the same team as Gary Illyes. He has been with Google since 2007 and helps ensure that information flows freely between webmasters and Google engineers. You can find many answers to your SEO questions on the official Google Search Central channel, where John Mueller constantly provides insights.

5. Barry Schwartz writes for Search Engine Land and Search Engine Watch and founded his own SEO company, Rusty Brick, a web consulting firm based in New York. His articles are extremely popular, and he has an impressive number of followers on Twitter.

6. Neil Patel is one of the most well-known digital marketing and SEO specialists. He founded two successful companies: CrazyEgg (one of the most popular web analytics tools, noted for its variety of heatmaps) and Kissmetrics (a web analytics tool that provides key insights into user interaction with the analyzed site). He is also a contributor to Quicksprout, a digital marketing knowledge resource.
7. Joost de Valk is the founder and CPO of Yoast, an SEO agency that also created the Yoast SEO plugin for WordPress. This plugin simplifies technical SEO optimizations and provides a series of advanced suggestions adapted to the latest SEO trends.
8. Cyrus Shepard has been in the SEO field since 2009. He is the former Head of Content and SEO at Moz and is now the founder of Zyppy, a company specializing in advanced SEO and the development of SEO tools.

9. Danny Sullivan is the founder and former editor-in-chief of Search Engine Land and MarketingLand.com. He has more than half a million followers on Twitter, who likely follow him for his deep expertise in SEO optimization.