is a Japanese politician who is a member of the House of Representatives since 2026 for Tokyo proportional representation block. A founding member of Team Mirai, Takayama serves as the party's Secretary-General.
Born in Kyoto, Takayama attended Nada High School before going on to Keio University, where he earned both his undergraduate and graduate degrees in Economics. After graduating, he worked as a consultant at Boston Consulting Group before working in business development at several Artificial intelligence (AI) startups.
On May 2025, Takayama became a founding member of Team Mirai, becoming its Secretary-General. In the 2025 House of Councillors election, he ran as part of Mirai's national proportional representation block list. Although he did not win, party leader Takahiro Anno secured a seat, giving the party its first seat in the National Diet.
In the 2026 general election, Takayama ran in Mirai's Tokyo proportional representation block. Mirai went on to win 4 seats in Tokyo PR, with Takayama being one of them, and was elected as a result, becoming a member of the House of Representatives.