Objectives: The aim of this study was to determine the interaction between Indonesian NS1 DENV-2 with 6D4B10 and 8A6F2 single chain fragment variable antibodies. Method: In this study, bioinformatics approach was performed on the six structures of Indonesian NS1 antigenes of DENV-2 to obtain the best model using BLAST, Pyre2, Modeller 9.20 and the FireDock server for molecular docking. Results and Discussion: We obtained the binding energy of 6D4B10 antibody to NS1 D2/ID/SMG-SE001 was -55.04

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... l/mol and 8A6F2 antibody to D2/ID/JKT-J002 was -49.42 kcal/mol. The interactions of antigen-antibody complex were hydrogen bonds, electrostatic interactions, hydrophobic interactions and several other interactions. Conclusion: The results showed that 6D4B10 and 8A6F2 antibodies can be provide for designing molecular antibody fragments as one of dengue diagnostic kits agent in Indonesia.