Foreign nationals and international investors are fully permitted to buy and sell stocks in Japan, provided they comply with standard regulatory requirements, tax obligations, and brokerage account conditions. Non-residents or foreign citizens can establish trading accounts with global brokerages that offer access to the Tokyo Stock Exchange or utilize specialized domestic Japanese securities firms that accept international clients. While direct participation is fully open, investors must account for foreign exchange currency conversions, cross-border transfer fees, and specific reporting rules dictated by both Japanese financial authorities and their home country's tax frameworks.