Vashishtha Narayan Singh was an Indian mathematician and academic. He taught mathematics at various institutes in India between the 1960s and the 1970s. He is popular on social media for supposedly having challenged Einstein's Theory of Relativity but there are no credible sources that prove so. In the early 1970s, Singh was diagnosed with schizophrenia due to which he was repeatedly in and out of psychiatric hospitals and only returned to academia in 2014. He was posthumously awarded the Padma Shri, the fourth highest civilian award of India for his contributions, in 2020.