Family caregivers of persons with dementia are faced with complex caregiving management needs. This study had two aims: (1) to identify caregiving management needs of family caregivers of persons with dementia and (2) identify any variables that might influence these needs. This cross-sectional study recruited family caregivers of persons with dementia (N = 250) through referrals from clinicians at a dementia outpatient clinic in Northern Taiwan. Data were collected with a 32-item researcher-developed instrument, the Caregiving Management Needs Scale (CMNS), to identify management needs specific to family caregivers of persons with dementia. The CMNS was comprised of questions about the types of assistance or support family caregivers would like to receive to facilitate caregiving. CMNS scores indicated caregivers had moderate management needs. Caregivers of relatives with a moderate severity of dementia had significantly higher scores on the CMNS compared with caregivers of persons with very mild dementia (p < 0.01). Linear regression analysis indicated significant predictors of high caregiving management needs were caregivers who were female (p < 0.01), and persons with dementia with behavioral problems (p < 0.01), low scores for Activities of Daily Living (p < 0.01), regular medication adherence (p < 0.01), and use of long-term care services (p < 0.001) were significant (F[13, 236] = 7.12; p < 0.001; R2 = 28.2%). Understanding variables and predictors of caregiving management needs for family caregivers could reduce the complexity of caregiving. ClinicalTrials.gov NCT05151185.