Penelitian ini bertujuan untuk mengetahui pengaturan hukum pada investasi reksa dana dalam jaringan, serta bentuk perlindungan hukum bagi investor pada investasi reksa dana dalam jaringan. Penelitian ini merupakan penelitian hukum normatif, pendekatan yang digunakan ialah pendekatan konseptual dan perundang-undangan. Berdasarkan hasil penelitian, maka penulis berkesimpulan bahwa perlindungan hukum investor pada investasi reksa dana dalam jaringan mencakup dua bentuk perlindungan hukum, yakni preventif dan represif. Upaya preventif direalisasikan melalui ketentuan normatif yang mengatur tata kelola manajer investasi secara ketat, mendorong transparansi informasi produk dan risiko, mewajibkan registrasi platform digital kepada Otoritas Jasa Keuangan, serta mensyaratkan penggunaan sistem elektronik yang memiliki tingkat keamanan dan keandalan. Di sisi lain, perlindungan represif dilaksanakan melalui pemberlakuan mekanisme penyelesaian sengketa yang terstruktur seperti mediasi dan arbitrase, penjatuhan sanksi administratif terhadap pelanggaran, serta pemberlakuan pertanggungjawaban hukum secara pidana maupun perdata terhadap pihak yang menyebabkan kerugian bagi investor. Meski begitu, efektivitas skema perlindungan ini sangat bergantung pada sinergi regulasi lintas sektor, khususnya antara bidang teknologi informasi dan pasar modal. Selain itu, pengawasan terhadap pelaku usaha jasa keuangan digital perlu diperkuat secara berkelanjutan. Tak kalah penting, edukasi hukum kepada investor harus digencarkan agar mereka memahami hak-hak hukum yang dimiliki serta mampu mengenali potensi risiko dan bentuk pelanggaran sejak dini.

This research aims to find out the legal arrangements on mutual fund investment in the network, as well as the form of legal protection for investors in mutual fund investment in the network. This research was normative legal research, the approach used was a conceptual and statutory approach. Based on the results of the research, the author concludes that the legal protection of investors in online mutual fund investments includes two forms of legal protection, namely preventive and repressive Preventive efforts are realized through normative provisions that strictly regulate the governance of investment managers, encourage transparency of product and risk information, require registration of digital platforms with the Financial Services Authonty, and require the use of electronic systems that have a level of security and reliability On the other hand, repressive protection is implemented through the implementation of structured dispute resolution mechanisms such as mediation and arbitration, the imposition of administrative sanctions for violations, and the implementation of criminal and civil legal liability for parties that cause losses to investors However, the effectiveness of this protection scheme is hughly dependent on cross-sectoral regulatory synergies, especially between information technology and capital markets In addition, supervision of digital financial services business actors needs to be strengthened on an ongoing basis. More importantly, legal education for investors must be intensified so that they understand their legal rights and are able to recognize potential risks and forms of violations early on.