The 1962 South Northamptonshire by-election was held in 1962 when the incumbent Conservative MP Reginald Manningham-Buller was elevated to the House of Lords. It was retained by the Conservative candidate, Albert Jones.
Buchan was serving in the Armed Forces, and stood to avail of the automatic military discharge for Parliamentary candidates publicised by Malcolm Thompson at the Middlesbrough West by-election the previous July.