Denis Coolican Andy Haydon Municipal elections were held on November 13, 1978 in the Regional Municipality of Ottawa-Carleton (RMOC), Ontario, Canada.

This page lists the election results for local mayors, reeves, councils and hydro commissions of the RMOC in 1978.

Nepean mayor Andy Haydon was elected as Regional Chair, defeating Rideau Township reeve Bill Tupper, 17–13 among elected regional councillors.

As the city had yet to be named, voters voted in a referendum to choose the new city's name.

Kanata was the choice of a plurality of voters, thanks to winning the support of voters in March Township.