PurposeCross-organizational cultural intelligence (COCI) is conceptualized as an ability of individuals to interact effectively with persons from different organizational cultures. To deal with culture differences in cross-organizational context, organizations need to select employees with high COCI. This study aims to develop an instrument to measure employees’ COCI in a cross-organizational context.Design/methodology/approachThe present study was conducted in three steps to develop a scale to measure COCI. First, 39 statements were identified based on a series of interviews. Then, via a survey of 275 part-time MBA students, 18 statements were categorized into four dimensions, namely, cognition, motivation, collaborative communication and behavioral adaptability. Finally, convergent, discriminant, predictive and incremental validity of the scale were tested.FindingsThis study extends the cultural intelligence to the cross-organizational context. The COCI concept provides theoretical support for cultural intelligence research in the cross-organizational context. Therefore, the present study broadens the research field of cultural intelligence. A four-dimensional scale was developed to measure COCI, which includes cognition, motivation, collaborative communication and behavioral adaptability. High COCI can enhance employee’s performance in a cross-organizational context.Research limitations/implicationsThis study still has several limitations. First, the self-report questionnaire indicated that the relationship between COCI and other constructs may be stronger because of single-source, self-reported data collection. Second, the new scale was developed in China. Although some respondents came from foreign companies, most surveyed employees belonged to Chinese enterprises. Based on the current results, COCI scale exhibits promise as a measurable criterion, but it requires more refinement and validation. Additional work in this area can explore factors that can influence or improve individual COCI. A theoretical network of COCI that includes predictors, consequences, mediators and moderators by theoretical research can be established.Practical implicationsThe COCI scale can be used in organizational management. Also, the COCI scale can help organizations understand the meanings of the employees’ COCI and select employees with high COCI during the recruitment. It makes managers easier to choose qualified candidates for inter-organizational projects. Beyond that, organizations can develop employees’ COCI according to the proposed four dimensions.Originality/valueThe development of the valid COCI scale will facilitate future research on boundary spanning. The COCI scale can measure individual cultural intelligence in a cross-organizational context. The present study has verified that COCI is different from emotional intelligence and provided a new perspective to explore the importance of individual ability in boundary-spanning activities. The instrumental support can help researchers effectively understand COCI and explore its potentials in boundary-spanning activities.