Salih N. Neftçi (14 July 1947 – 15 April 2009) was a leading expert in the fields of financial markets and financial engineering. He served many advisory roles in national and international financial institutions, and was an active researcher in the fields of finance and financial engineering. Professor Neftçi was an avid and highly regarded educator in mathematical finance who was well known for a lucid and accessible approach towards the field.