Ken Ferguson may refer to:

• Ken Ferguson (Canadian football) (born 1944), Canadian football player
• Ken Ferguson (politician) (born c. 1951), American politician in Arkansas
• Ken Ferguson (1928-2004), American ceramist

• Fritillaria polyphylla
• Fritillaria praecox
• Fritillaria przewalskii
• Fritillaria pterocarpa
• Fritillaria punctata
• Fritillaria puqiensis
• Fritillaria qimenensis
• Fritillaria qingchuanensis
• Fritillaria reygassii
• Fritillaria rhodia
• Fritillaria rhodocanakis
• Fritillaria roylei
• Fritillaria saranna
• Fritillaria scandens
• Fritillaria shaanxiica
• Fritillaria shennongjiaensis
• Fritillaria shuchengensis
• Fritillaria sichuanica
• Fritillaria sinica
• Fritillaria skorpili
• Fritillaria sororum
• Fritillaria sphaciotica
• Fritillaria stenophylla
• Fritillaria sulcisquamosa
• Fritillaria tachengensis