Graham Stuart Staines (18 January 1941 – 23 January 1999) was an Australian Christian missionary who, along with his two sons, Philip (aged 10) and Timothy (aged 6), were killed by being burnt to death in India by members of the Bajrang Dal, a Hindutva organisation. In 2003, Bajrang Dal member Dara Singh was convicted of leading the murderers and was sentenced to life in prison.

Staines had been working in Orissa (Odisha) since 1965 as part of an evangelical missionary organisation named "Mayurbhanj Leprosy Home" caring for people who had leprosy and looking after the tribal people in the area who lived in abject poverty. However, some Hindutva groups alleged that during this time he had supposedly tricked, lured or forcibly coerced many Hindus into believing in the Christian faith. The Wadhwa Commission noted that there was no evidence of forced conversions. Staines's widow Gladys has also denied the allegation of forced conversions.

Gladys continued to live and work in India caring for those who were poor and were affected by leprosy until she returned home to Australia in 2004. In 2005, she was awarded the fourth highest civilian honour of India, the Padma Shree, in recognition for her work in Orissa. In 2016, she received the Mother Teresa Memorial International Award for Social Justice.

Graham Staines was born in the Sunshine Coast suburb of Palmwoods in the Australian state of Queensland. He visited India for the first time in 1965 by joining the Evangelical Missionary Society of Mayurbhanj (EMSM), and worked in the remote tribal areas of Orissa, a state with a long history of Christian missionary work. He took over the management of the Mission at Baripada in 1983 after helping to establish the Mayurbhanj Leprosy Home as a registered society in 1982.

Staines met Gladys in June 1981, while they worked together taking care of leprosy patients on the mission field. Not too long after that they decided to get married, in 1983; they worked together until his death. Together they had three children: a daughter, Esther, and two sons, Philip and Timothy. During the course of his work Staines had managed to assist in the translation of part of the Bible into the language of the Ho people of India, which included his crosschecking the work with the entire manuscript of the New Testament, though it is largely believed his main focus was on his ministry to the lepers. It was reported that he could speak the Odia language fluently, and was popular among the patients whom he had managed to cure. In addition to this it was also reported that he used to teach people how to make mats and baskets out of rope, sabai grass (Eulaliopsis binata) and tree leaves.

On 22 January 1999, Staines attended a jungle camp in Manoharpur, which was an annual gathering for Christians in the area to congregate for a conference and discuss their beliefs in a social setting. The camp was on the border between the tribal villages of Mayurbhanj and Keonjhar. He was travelling to Kendujhar with his sons, who were on a break from their schooling in Ooty, a hill station in Tamil Nadu. At a point, they decided to take a break from the journey towards the jungle camp, and elected to spend the night in Manoharpur, sleeping in the vehicle due to the severe cold at the time. His wife and daughter did not accompany them on the journey, having decided to remain behind in the town and municipality of Baripada.

A mob of about fifty people, armed with axes and other implements, attacked the vehicle while Staines and his sons were fast asleep, and set the station wagon alight, trapping them inside and burning them to death. Current BJP MP Pratap Chandra Sarangi was also believed to be a part of this murder as he was Orissa State Unit Chief of the Bajrang Dal during this planned murder.

Staines and his sons had awakened and apparently tried to escape but were prevented from doing so by the angry mob of vigilantes.