Pinion (disambiguation)
Pinion stands for:
- the smaller diameter gear of a gear pair, see pinion
Ritzel is the family name of the following people:
- Fritz Ritzel (1854–1935), German writer
- Gerhard Ritzel (1923–2000), German ambassador
- Heinrich Ritzel (1893–1971), German politician (SPD)
- Taylor Ritzel (* 1988), American rower
- Ulrich Ritzel (* 1940), German journalist and writer
