# Woody Harrelson and Matthew McConaughey sibling speculation

> Live situation record from CLSTR: https://clstr.news/situations/woody-harrelson-and-matthew-mcconaughey-sibling-speculation
> Updated: 2026-08-21T22:43:49.000Z. Sources: 3. Developments: 2.

Actors Woody Harrelson and Matthew McConaughey have explored the possibility of a familial connection following comments made by McConaughey’s mother, Mary Kathlene McConaughey. She reportedly told Harrelson, “I knew your father,” suggesting a relationship with Harrelson’s father that may imply the two actors are half-brothers.

The actors have attempted to investigate this through the timing and locations of their parents' lives in West Texas, noting that Harrelson’s father was on furlough during a period when McConaughey’s parents were undergoing a second divorce. While they have not undergone DNA testing, the speculation has gained public attention.

The two, who met while filming ‘EDtv’ in the 1990s, are set to portray fictionalized versions of themselves in an upcoming Apple TV+ comedy series titled ‘Brothers’.

## Timeline

### 2026-08-21: Woody Harrelson and Matthew McConaughey reveal potential family connection

Woody Harrelson and Matthew McConaughey are exploring a potential familial connection after McConaughey’s mother suggested she had a significant relationship with Harrelson’s father.

3 sources. https://clstr.news/cluster/woody-harrelson-and-matthew-mcconaughey-reveal-potential-family-connection

### 2026-07-24: Matthew McConaughey jokes about possible half‑brother tie to Woody Harrelson

Matthew McConaughey posted a birthday tribute to Woody Harrelson, joking they might be half‑brothers, amid promotion for their Apple TV+ series “Brothers.”

6 sources. https://clstr.news/cluster/matthew-mcconaughey-jokes-about-possible-halfbrother-tie-to-woody-harrelson

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Cite as: Woody Harrelson and Matthew McConaughey sibling speculation. CLSTR, https://clstr.news/situations/woody-harrelson-and-matthew-mcconaughey-sibling-speculation