Elvetham is a hamlet about 1 mile (1.6 km) east of Hartley Wintney. Until the 20th century it was a separate civil parish. Hartfordbridge, about 3⁄4 mile (1.2 km) northeast of Hartley Wintney, was partly in Elvetham parish and partly in Hartley Wintney.
Elvetham was a manor by the time of Edward the Confessor in the 11th century. There has been a country house there since at least 1535, when John Seymour entertained Henry VIII there. Edward Seymour, 1st Earl of Hertford entertained Elizabeth I there in 1591. Of that house no trace remains. The present Elvetham Hall was designed by Samuel Sanders Teulon and built in 1859–62. It is now a Grade II* listed building. Formerly the seat of the Barons Calthorpe, the house is now a 70-bedroom hotel, conference and banqueting venue.
Elvetham had a parish church from an early date, but in 1840 it was dismantled. The present Romanesque Revival church of St Mary the Virgin in the grounds of Elvetham Hall was completed in 1841. In the 20th century the Diocese of Winchester declared it redundant. The church is now one of Elvetham Hall's conference and banqueting venues.
On 5 October 1945 a Consolidated B-24 Liberator GR.VI aircraft of No. 311 Squadron RAF crashed and burst into flames in a field on the Elvetham Hall estate. All of its passengers and RAF crew were Czechoslovak. All 23 people aboard were killed, including five young children who were from 18 months to three years old. The Flight List had the names of the 5 crew and the 17 civilians who were on board the plane. However an extra civilian was found, a woman. 13 of the civilians were buried in a communal grave in Brookwood Civil Cemetery. The 5 aircrew received a military burial 100 metres away in Brookwood Military Cemetery. It was realised that the extra casualty was Edita Sedlakova who had been offloaded in favour of a replacement but she had stowed aboard the flight. She had not long been married to the Flight Engineer, Zdenek Sedlak, and this was their honeymoon flight home. Edita lies in the communal grave while Zdenek is in the military. Edita was just 19 years old.