---
type: Person
title: "Mark B. Messmer"
description: "U.S. House of Representatives - IN-8 — Congressional District 8"
role: "U.S. House of Representatives - IN-8"
party: "R"
level: "federal"
branch: "legislative"
state: "IN"
district: "Congressional District 8"
tenure:
  start: "2025-01-03"
  current: true
election:
  next: 2026
  term_length: 2
  term_limit: "none"
ids:
  person: "e62fc407-ded3-4839-9080-9f7f9c054226"
  office: "88dcb2bf-3e53-45d7-afc9-6fed880c32d1"
  tenure: "6162c786-ccb0-46d6-b261-fbf204e8623c"
  jurisdiction: "cde9d80f-073c-4936-a8d1-445f00b7080b"
sources:
  - field: tenure
    source: "House Clerk XML 2026-06-10"
  - field: jurisdiction
    source: "Census 119th CD 500k"
confidence: official
tags: [officeholder, federal, legislative, in]
timestamp: "2026-06-20"
---

# Mark B. Messmer

Current U.S. House of Representatives - IN-8 (Congressional District 8).

## Sources

- tenure: House Clerk XML 2026-06-10
- jurisdiction: Census 119th CD 500k

Generated from the Atlas officeholders v2 export (2026-06-20).