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.
Communication shapes leadership, relationships, careers, and the ability to inspire others. Apostolos Koumarinos has dedicated his life to understanding exactly how people connect through words, presence, and authenticity. Through years of speaking, coaching, podcasting, and studying human behavior, he has become one of the most recognized voices in public speaking and communication development in Greece.
Born in Montreal, Canada, Apostolos developed an early fascination with human interaction and expression. This passion eventually led him to build a career focused on helping people communicate with greater confidence, influence, and emotional intelligence. Today, he works with audiences, professionals, entrepreneurs, leaders, and organizations that want to strengthen the way they speak, present, and connect with others.
In 2018, Apostolos founded theSPEAKERS, the first personal development platform in Greece focused entirely on public speaking and communication. The platform quickly grew into a major community for people seeking to improve their presentation skills, confidence, leadership communication, and public presence.
Through theSPEAKERS, Apostolos has connected with more than 225,000 people across social media, creating content, workshops, speeches, and educational material designed to make communication practical and accessible. His mission has always been clear: to help people express themselves with confidence and authenticity.
His approach combines actionable techniques with emotional awareness, helping audiences understand that impactful communication goes beyond performance — it starts with clarity, empathy, and self-awareness.
Apostolos is also the host of the Kings or Pawns Podcast, one of Greece’s leading podcasts. Across more than 140 episodes, he has interviewed influential guests from science, sports, business, literature, and the arts.
These conversations explore performance, mindset, leadership, discipline, creativity, resilience, and the human stories behind success. His ability to ask meaningful questions and create authentic dialogue has made the podcast widely respected among listeners seeking inspiration and practical wisdom.
The podcast experience has also shaped Apostolos as a keynote speaker. By speaking with high performers from many different industries, he brings diverse perspectives and real-world lessons into every stage appearance.
With more than 1200 public speeches delivered across Europe and Oceania, Apostolos brings extensive stage experience to every event. His speaking style is energetic, thoughtful, and deeply engaging, blending storytelling with practical communication strategies audiences can immediately apply.
His keynote topics often include:
Audiences appreciate his ability to simplify complex communication principles into practical tools that create immediate results. Whether addressing corporate leaders, entrepreneurs, students, or large conference audiences, Apostolos creates a strong connection through honesty, clarity, and relatable storytelling.
Apostolos combines communication expertise with deep academic and personal development experience. He is a Certified Coach from the National and Kapodistrian University of Athens and a graduate in Systemic Psychotherapy.
This background allows him to approach communication from both a practical and psychological perspective. His talks often explore how emotions, beliefs, identity, and mindset influence the way people communicate and lead.
He helps audiences understand how communication affects confidence, teamwork, relationships, decision-making, and personal growth. Rather than focusing only on techniques, he encourages individuals to develop communication that feels authentic and sustainable.
Beyond speaking and coaching, Apostolos is also an accomplished marathon and ultra-marathon runner. Endurance sports have played a major role in shaping his mindset around resilience, discipline, consistency, and mental strength.
These experiences often become powerful elements in his talks, offering audiences practical lessons about perseverance, discomfort, focus, and long-term growth. His ability to connect physical endurance with personal and professional performance creates a unique perspective that resonates strongly with modern audiences.
In 2023, Apostolos published Greece’s first Public Speaking Guide, giving readers practical tools to deliver stronger speeches and communicate effectively across any field. The book further established his position as a trusted authority in communication and public speaking development.
Apostolos Koumarinos delivers inspiring and practical keynote speeches that help audiences communicate with confidence, lead with authenticity, and perform under pressure. His combination of stage experience, psychological insight, storytelling ability, and real-world coaching experience makes his presentations both engaging and highly actionable.
Whether speaking about leadership, communication, mindset, resilience, or public speaking, Apostolos creates memorable experiences that leave audiences motivated and equipped with tools they can immediately apply in everyday life and business.
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
