Lapua (Swedish: Lappo) is a Finnish city located in the province of Southern Ostrobothnia. The city is home to 14,331 people. The area of ​​the municipality is 750.78 km², of which 13.63 km² are water bodies. The population density is 19.4 inhabitants / km². The neighboring municipalities of Lapua are Alajärvi, Kauhava, Kuortane, Lappajärvi and Seinäjoki. The former neighboring municipalities are Nurmo and Ylistaro connected to Seinäjoki and Ylihärmä connected to Kauhava.

Lapua is perhaps best known for the Lapua movement, the explosion of the Lapua Cartridge Factory (1976) and the kindergarten. Olympic-level athletes such as Harri Koskela, Tapio Korjus and Mikko Huhtala have also made the city famous. Lapua Virkia's women's super nest team has won the Finnish baseball championship 11 times, won the Finnish Championship silver six times and bronze seven times.

Today, the city is also known for its rich cultural life. Culture got its own house when the former Lapua Cartridge Factory building was renovated into the city's cultural center. The place is now known as the Old Paukku Cultural Center and houses, among others, Lapua Music College, City Library, Lapua Citizens' College, Lapua Theater, Lapua Art Museum, Lapua Movement Museum, Lapua Cartridge Factory Museum, Patruun Gallery, Pyhälahti Photographic Museum, Ostrobothnia Photography Center and the Ostrobothnia Photography Center.

In the old Pauku, annual music event Old Bird Festival and Old Bird Philosophy Days. In addition, the locality organizes annually e.g. Lapua Day celebration, Ritafest rock festival and every other year the international organ music event Lapua Organ Festival.

Well-known cultural figures born in Lapua include e.g. artist Teemu Mäki, founder of the Million Rain band, musician Heikki Salo, dialect writer Harri Harju, late actor Esko Nikkari and dancer Jukka Haapalainen.

The local newspaper Lapuan Sanomat is published in Lapua.