This study aimed at enhancing EFL primary school pupils' writing skills through using internet based linguistic intelligence activities. To fulfill this purpose, three instruments were constructed: a writing  skills questionnaire to determine the necessary writing skills for 6^th grade primary stage pupils, a pre – post  writing test to assess EFL pupils' writing skills before and after the study intervention and a rubric for assessing and scoring the EFL writing skills included in the writing test. The validity and reliability of the study instruments were established before their application in the study. The quasi-experimental design was adopted. The participants of the study were 60 pupils selected from the 6th grade primary stage pupils at Mansoura College International Language Schools.The experimental group pupils were taught through the proposed internet based linguistic intelligence activities while the control group pupils studied through the regular instructional activities. Results of the study revealed that the experimental group pupils  EFL writing skills were significantly enhanced. It was recommended that linguistic intelligence activities should be used in EFL teaching to enhance writing skills and other language skills. In addition EFL learners should be provided with writing courses in which  internet based linguistic intelligence activities are employed.