Anyone with information is asked to contact Christchurch Police on (03) 363 7400, or anonymously via Crimestoppers on 0800 555 111.
The new store was only opened in the rebuilding post-earthquake city centre in June this year. Kathmandu's first New Zealand store was launched in Christchurch in 1991.
Thieves also ram-raided well-known Christchurch sports store Anderson & Hill Sportspower this mnonth and stole All Blacks clothing and other branded gear.