Purpose. To study the uncertainty of globalization influences on strategic planning (SP). To identify peculiarities of SP for enterprises of Ukraine. To develop methods for evaluating the SP effectiveness in conditions of uncertainty and changes in the level of uncertainty in parameter sequences for relevant forecasting. Methodology. The study used the following methods: critical analysis – to identify the peculiarities of SP in Ukraine; mathematical formalization – to evaluate the efficiency of SP; method of comparing the first derivatives – for the current assessment of the rate of change in economic indicators and their approximation to the target values of SP; analysis and synthesis – to establish the uncertainty levels of the input and outputs sequences of each of the parameters of globalization. Findings. It is stated that different vectors of globalization influences cause formation of a complex “competitive landscape”, which increases the uncertainty of SP. Stratification of requirements for formation of strategic plans and opportunities which they allow implementing is proposed, as well as stratification of indicators of globalization influence. The factors of globalization influence on the formation of uncertainty in the activities of Ukrainian enterprises are studied and the peculiarities of this influence on the SP process are indicated. Originality. An assessment of the level of approximation of the actual and target results of enterprise’s activity is proposed as an indicator of SP effectiveness. A comparison of first derivatives of the efficiency indicator was used to reduce the uncertainty in estimating the rates of dynamic approximation of the actual and forecast results. A method of ordering heterogeneous sequences is proposed for a relevant assessment of the change in the level of uncertainty in parameter sequences. Practical value. The proposed approach reduces conceptual SP ambiguity. The developed method for assessing the uncertainty of globalization effects on SP and identifying the SP peculiarities in conditions of uncertainty will increase SP relevance for Ukrainian enterprises.