- Campanula alliariifolia, Cornish Bellflower
- Campanula americana
- Campanula angustiflora, Eastwoods bellflower
- Campanula aparinoides, Marsh bellflower
- Campanula aurita, Yukon bellflower
- Campanula bononiensis, Pale Bellflower
- Campanula californica, Swamp bellflower
- Campanula canescens
- Campanula carpatica, Tussock Bellflower
- Campanula chamissonis, Hairyflower bellflower
- Campanula cochleariifolia, Fairys-thimble
- Campanula dimorphantha
- Campanula divaricata, Small bonny bellflower
- Campanula exigua, Chaparral bellflower
- Campanula floridana, Florida bellflower
| - Campanula fragilis, Italian Bellflower
- Campanula garganica, Adriatic Bellflower
- Campanula glomerata, Clustered Bellflower
- Campanula griffinii, Griffins bellflower
- Campanula hofmannii
- Campanula lasiocarpa, Mountain harebell
- Campanula latifolia, Giant Bellflower
- Campanula medium, Canterbury-bells
- Campanula parryi, Parrys bellflower
- Campanula patula, Spreading Bellflower
- Campanula persicifolia, Peach-leaved Bellflower
- Campanula piperi, Olympic bellflower
- Campanula portenschlagiana, Adria Bellflower
- Campanula poscharskyana, Trailing Bellflower
- Campanula pyramidalis, Chimney Bellflower
| - Campanula rapunculoides, Creeping Bellflower
- Campanula rapunculus, Rampion Bellflower
- Campanula reverchonii, Basin bellflower
- Campanula rhomboidalis, Broad-leaved Harebell
- Campanula robinsiae, Robins bellflower
- Campanula rotundifolia, Harebell
- Campanula scabrella, Rough bellflower
- Campanula scouleri, Pale bellflower
- Campanula sharsmithiae, Mt Hamilton bellflower
- Campanula shetleri, Castle Crags bellflower
- Campanula trachelium, Nettle-leaved Bellflower
- Campanula uniflora, Arctic bellflower
- Campanula wilkinsiana, Wilkins bellflower
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