Founder of theSPEAKERS, podcast host, communication expert, and public speaking coach.
5.00 of 5
Top rated!5 of 5
“Apostolos, doesn’t teach communication. He teaches how people listen, think and respond.”
Senior HR Leader
Global Organization
Apostolos Koumarinos is a communication expert, keynote speaker, podcast host, and founder of theSPEAKERS — Greece’s first personal development platform dedicated to public speaking and communication. With more than 1200 speeches delivered across Europe and Oceania and over 140 podcast conversations with influential personalities, Apostolos helps individuals and organizations communicate with clarity, confidence, and impact. His talks combine psychology, storytelling, leadership, and practical communication tools that audiences can apply immediately in both professional and personal life.
Apostolos Koumarinos is a speaker, coach, podcast host, and communication expert who helps people communicate with greater confidence, clarity, and impact.
Born in Montreal, Canada, and now one of Greece's most recognised voices in communication development, Apostolos has dedicated his career to understanding how people connect, influence, and inspire through their words and presence. Through keynote speaking, coaching, content creation, and education, he works with professionals, entrepreneurs, leaders, and organisations seeking to strengthen their communication and leadership skills.
His presentations combine practical communication strategies, psychological insight, and engaging storytelling to help audiences communicate more effectively in both their professional and personal lives.
In 2018, Apostolos founded theSPEAKERS, Greece's first personal development platform dedicated entirely to public speaking and communication.
The platform has grown into a thriving community, reaching more than 225,000 people through workshops, educational content, speeches, and social media. Through this work, Apostolos has helped thousands of individuals improve their presentation skills, strengthen their confidence, and become more effective communicators.
His philosophy is simple: impactful communication is not about performance alone, it begins with clarity, empathy, and self-awareness.
Apostolos is also the creator and host of Kings or Pawns, one of Greece's leading podcasts.
Across more than 140 episodes, he has interviewed influential figures from business, science, sport, literature, and the arts. These conversations explore leadership, resilience, discipline, creativity, performance, and the lessons behind success.
The podcast has broadened his perspective as a speaker, allowing him to bring insights from high performers across diverse fields into his keynote presentations.
With more than 1,200 speeches delivered across Europe and Oceania, Apostolos brings extensive stage experience to every event.
His keynote topics include:
Audiences value his ability to translate complex communication concepts into practical tools that can be applied immediately.
Whether speaking to executives, entrepreneurs, students, or conference audiences, he creates engaging experiences built around honesty, clarity, and real-world relevance.
Apostolos combines communication expertise with a strong background in coaching and psychology.
He is a Certified Coach through the National and Kapodistrian University of Athens and a graduate in Systemic Psychotherapy. This training allows him to explore not only how people communicate, but also why they communicate the way they do.
His work examines the relationship between communication, emotions, identity, beliefs, and behaviour, helping audiences better understand the factors that influence leadership, relationships, teamwork, and personal development.
Outside his professional work, Apostolos is an accomplished marathon and ultra-marathon runner.
Endurance sports have shaped his perspective on discipline, consistency, resilience, and long-term growth. These experiences often feature in his presentations, providing practical lessons about perseverance, focus, and performing through discomfort.
In 2023, he published Greece's first Public Speaking Guide, further establishing himself as a leading authority in communication and presentation skills.
Apostolos Koumarinos delivers keynote presentations that combine communication expertise, psychological insight, and real-world experience.
Whether speaking about leadership, communication, mindset, resilience, or personal development, he equips audiences with practical tools they can immediately apply while inspiring them to communicate and lead with greater confidence and authenticity.
For organisations seeking a speaker who can help people connect, communicate, and perform at a higher level, Apostolos delivers an experience that is both engaging and actionable.
5 of 5
“Apostolos, doesn’t teach communication. He teaches how people listen, think and respond.”
Senior HR Leader Global Organization
5 of 5
“What stayed with us wasn’t a technique, but a shift in awareness. Conversations became clearer, calmer and more intentional.”
Executive Team Member International Organization
5 of 5
“Apostolos create room for people to think before they speak. That alone changed how our leaders communicate under pressure.”
Head of Learning & Development
Keynote by Apostolos Koumarinos:
This keynote focuses on how leaders and professionals communicate effectively when pressure is high and clarity matters most.
It explores presence, message clarity, and decision-making under stress, helping audiences perform and communicate with confidence in critical moments such as presentations, leadership transitions, and public speaking engagements.
Keynote by Apostolos Koumarinos:
A talk dedicated to personal and professional development at leadership level. It covers executive presence, mindset, and influence, helping individuals move from capability to visible impact.
The focus is on aligning inner confidence with external communication, especially in leadership and organizational contexts.
Keynote by Apostolos Koumarinos:
This keynote addresses how leaders and teams create alignment through communication.
It focuses on clarity, active listening, and trust-building in complex environments, where miscommunication can create friction or delay progress.
The aim is to improve collaboration, understanding, and decision-making within teams and organizations.
Keynote by Apostolos Koumarinos:
This keynote explores the unseen phase behind every form of success — the internal process, discipline, and decisions that happen long before results become visible. It focuses on mindset, consistency, and the often overlooked foundations of high performance, helping audiences understand what truly drives sustainable achievement.
Watch Apostolos Koumarinos in action!
