Korean food is being recognized for its excellence. This paper attempts to provide material for the popularization of Korean cuisine with respect to foreign nationals living in Korea who are vegetarian by studying their Korean cuisine knowledge and preferences. The results of an Importance-Performance Analysis showed that though the importance values of traditional spice use such as garlic and the consideration of ingredient price were high, their performance values were low. Thus, these were areas identified as needing major improvement. Repeated measured data analysis was performed to determine variations in the perception of major factors for the development of Korean cuisine. The results indicated that simplification of seasoning was the most important factor followed by diversification of food ingredients, resale of vegetables in small quantities, ease of obtaining Korean cuisine recipes, and popularization of herbal and temple food, in that order. The least important factor in developing Korean cuisine was determined to be the reduction in levels of salt. Conjoint analysis was performed on the choices affection the selection of Korean cuisine, and price was found to be the most important factor. It was also determined that the effectiveness in the combination of fusion style, health oriented, concurrently served, medium to low price Korean cuisine was highest in preference. The next highest preferred combination was traditional style, health oriented, concurrently served, medium to low price Korean cuisine. The most significant factor to keep in mind in developing Korean dishes for foreign vegetarians was determined to be price. Furthermore, it was important to not simply reduce caloric intake but to use healthy ingredients and cooking methods.