This study examined the relationship between capacity buffering and demand uncertainty of
manufacturing firms in Rivers State, Nigeria. The measures of demand uncertainty used are
demand forecasting accuracy and inventory turnover. The study adopted a cross-sectional survey
research design. The target population was the 34 manufacturing firms registered with the
Manufacturing Association of Nigeria, as obtained from the 2023 updated Directory of Rivers
State zone of the association. However, the study elements were 80 which comprised managers
from the production, marketing and operations departments of the respective 34 manufacturing
firms. Data for the study was collected through structured questionnaire. The five-point Likert
scale was used to measure the responses from the respondents. Data was analyzed using mean
and standard deviations with charts for the primary analysis of the study variables, while
inferential statistics such as the Spearman Rank Order Correlation Coefficient was used to test
the hypotheses. The results of the study showed that there is moderate positive relationship
between capacity buffering and demand forecasting accuracy. The study also revealed a strong
positive relationship between capacity buffering and inventory turnover. The study concludes that
capacity buffering has a significant relationship with demand forecasting accuracy and inventory
turnover of manufacturing firms in Rivers State, Nigeria. The study therefore recommends that
manufacturing firms should integrate capacity buffering strategies such as overtime shifts, flexible
labor and machine redundancy into their demand forecasting models. Again, this alignment
enables firms to better accommodate fluctuations in customer demand, thereby improving the
accuracy and reliability of forecasting results.