On 14 April 1999, the Pakistan Post, as part of its 'Scientists of Pakistan' series, issued a commemorative stamp to honour the contributions and services of Siddiqui. In the same year, the street leading to PCSIR Laboratories Complex in Karachi was named as "Shahrah-e-Dr. Salim-uz-Zaman Siddiqui". Siddiqui was also remembered by his students and colleagues, many of whom continued to dedicate their international research and publications to his memory. In 2002, a research article was published in the journal Tetrahedron in which, authors Faizi and Naz dedicated their break-through research to the memory of Siddiqui, their mentor.