Background: Nursing schools are the basic and fundamental stone to be qualified, registered and professional nurse. Excellent and good teachers' performance leads to a successful learning process. Aim of the study: was to assess the competence of nursing teachers' performance in technical nursing schools at Sharkia Governorate. Subjects & Methods: Research design: A descriptive cross sectional design was utilized. Setting: All technical nursing schools at Sharkia Governorate. Subjects: The study sample included all technical nursing teachers in 17 schools nursing schools' at Sharkia Governorate (119 teachers) and 510 students. Tools of data collection: Tool (1) was used to assess the self- assessment of nursing teachers, tool (2) was used to assess Students' satisfaction of their nursing teachers and tool (3) was used by researcher to evaluate the performance of nursing teacher's in classroom. Results: The study findings revealed that the most of nursing teachers assessed themselves with high performance (85.7%). Moreover, majority of nursing students were satisfied of their teachers in general (83.8%), finally, the competence of technical nursing teachers' performance was higher in personal skills (73.9%) compared to teaching skills (24.4%). There was a statistical significant relation between students' satisfaction of nursing teachers and their gender (p< 0.001). Conclusion: The most of nursing teachers assessed themselves with high performance. The majority of students were satisfayed with their teachers in general. While in observed performance personal skills were better than teaching skills, and total teaching skills were low, especially regarding using teaching media and setting objectives.. Recommendation: Develop training programs for nursing teachers' about using teaching media, setting objectives, and standards for self-assessment.