Places beginning with BU in Iowa, United States
- Bubona (historical)
- Buchanan
- Buchanan County
- Buchanan, Township of
- Buchanan, Township of
- Buck Creek
- Buck Creek
- Buckeye
- Buckeye, Township of
- Buck Grove
- Buck Grove
- Buckhorn
- Buckingham
- Buckingham (historical)
- Buckingham, Township of
- Bucknell
- Budd
- Buena Vista
- Buena Vista County
- Buena Vista (historical)
- Buena Vista, Township of
- Buena Vista, Township of
- Buffalo
- Buffalo
- Buffalo Center
- Buffalo Heights
- Buffalo, Township of
- Buffalo, Township of
- Buffalo, Township of
- Buffalo, Township of
- Buffalo, Township of
- Bulgers Hollow
- Bullard
- Buncombe, Township of
- Burchinal
- Burdette
- Burlington
- Burlington, Township of
- Burnside
- Burnside, Township of
- Burrell, Township of
- Burr Oak
- Burr Oak
- Burr Oak, Township of
- Burr Oak, Township of
- Burt
- Burt, Township of
- Bushville
- Business Corners (historical)
- Bussey
- Butler Center
- Butler County
- Butler, Township of
- Butler, Township of
- Butler, Township of
- Butler, Township of
- Buxton