In this article, Harald Sippel FCIArb and Amanda Lee FCIArb explore the ‘Trump Effect on Arbitration'. The term ‘Trump Effect’ originally refers to an alleged increase in school bullying in the USA caused by the rhetoric used by U.S. President Donald Trump during his 2016 presidential campaign. Other ‘Trump Effects’ have been alleged: various media channels spoke of the ‘Trump Effect overseas,’ the ‘Trump Effect on the stock market' (or ‘Trump trade') and, most famously, the ‘Trump Effect on immigration'.