Mukesh Singh, Vinay Sharma, Akshay Thakur and Pawan Gupta were found guilty on all counts earlier this week.
Judge Yogesh Khanna said the case fell in the “rarest of rare category”, rejecting pleas for a lighter sentence.
The woman, 23, was attacked on a bus in December and died two weeks later.
On Friday, Judge Khanna said the attack “shocked the collective conscience” of India, and that “courts cannot turn a blind eye” to such crimes.
The men were convicted to death by hanging, and one of them, Vinay Sharma, broke down in tears as the verdict was announced.
The father of the victim, who cannot be named for legal reasons, said the family was satisfied with the ruling.
As they were escorted to the courtroom, the four men shouted to the crowd: “Brothers, save us!”
They all deny the charges and can still appeal against the verdict to the Supreme Court and also ask the president for clemency – a process that could take years.
Source Associated Press