This thesis examines the significant impact of culture on business negotiations, focusing on how cultural differences influence communication styles, negotiation strategies, and overall outcomes. It begins by defining culture in the context of negotiations and highlights the importance of understanding cultural nuances to enhance negotiation effectiveness. The study provides an overview of key cultural dimensions, such as direct versus indirect communication styles, relationship-oriented versus task-oriented approaches, and varying attitudes towards time. The research delves into specific cultural variations that affect negotiation practices and explores common communication barriers, including language differences and divergent styles. Strategies to overcome these barriers are discussed, with particular emphasis on the role of Business English as a Lingua Franca in facilitating cross-cultural interactions. The analysis includes information from research studies to illustrate various points of view on cross-cultural negotiations, offering insights into best practices. The thesis concludes with practical recommendations for navigating cross-cultural negotiations successfully, stressing the necessity of cultural competence and adaptability for achieving favourable outcomes in international business contexts.