Introduction: Children's growth and development and learning achievements require adequate nutritional intake by eating breakfast or what is usually called breakfast. Research objective: To determine the relationship between breakfast habits and nutritional status with student learning achievement at SDN 345 Kaduaja, Benteng Deata, Gandang Batu Sillanan District, Tana Toraja Regency. Research method: This research method is descriptive correlational with a cross sectional approach, the sample size is 37 respondents. represents the population. This sampling technique is Proportional Stratified Random Sampling. Data was collected using a questionnaire and tested statistically. Research results: From the results of this research, the majority of respondents were female, 21 students (56.8%), the majority of respondents were 10 years old, 12 students (32.4%). The majority of respondents with good breakfast habits were 19 students (51.4%), the majority of respondents with good nutritional status were 19 students (51.4%) and the majority of respondents with good performance were 25 students (67.6%). The results of the Fisher's exact test statistical test showed that there was no relationship between breakfast habits and learning achievement with a p-value = 0.528 and it was found that there was a relationship between nutritional status and learning achievement with a p-value = 0.033. Conclusion: Based on the research results, it was concluded that there was no relationship breakfast habits and learning achievement. There is a relationship between nutritional status and learning achievement of students at SDN 345 Kaduaja, Deata Deata Castle, Gandang Batu Sillanan subdistrict, Tana Toraja Regency. It is recommended that students meet their nutritional needs by eating healthy and balanced foods.