Lucille Ossai is an international award-winning communications trainer, advisor, keynote speaker, and bestselling author of Influence and Thrive.

She’s also the founder of Rethinking Business Communications Limited. This company delivers training and advisory services on nonverbal and interpersonal communication, public speaking,  business writing, and leadership communication and influence.

Lucille’s expertise is globally recognised. In 2026, Global Gurus ranked her the #10 communication professional in the world. She was the only Black expert to feature in the highly competitive communication category.

She also developed the Global 4-Domain Communication Skills Rating Tool™ — the first comprehensive framework integrating cultural intelligence with four-domain communication assessment across nonverbal and interpersonal skills, public speaking, business writing, and leadership communication and influence. Her work challenges traditional Western-biased models and introduces fairer, bias-reduced approaches to measuring executive communication across regions.

Her multi-award-winning blog, Rethinking Business Communications Blog, is the only African-based website to appear on Feedspot’s authoritative list of the top 40 communication blogs. Her technical note has been published in the Case Centre (UK). Additionally, her articles have been featured in BizCatalyst 360, Enterprising Africa Magazine, and BusinessDay Nigeria. 

For over a decade, Lucille has designed and delivered executive communication programmes at the Financial Times-ranked Lagos Business School, where her sessions have earned ratings of up to 4.9/5. She has worked with over 1,000 senior leaders and professionals, partnering with organisations such as Nestlé Nigeria, the Nigeria Stock Exchange, World Commerce & Contracting, and the Society of Petroleum Engineers (Lagos Chapter).

Her work has earned recognition from senior global leaders. In 2023, Sally Guyer, the Global CEO of World Commerce & Contracting, described Lucille’s keynote for the organisation as ‘impactful and inspiring’, noting that the audience greatly valued her practical strategies for improving business communication.

She is trusted by executives, leadership teams, and high-performance professionals to build influence, strengthen leadership presence, and drive results through communication.