B hadron lifetime measurements at the Tevatron experiments

We present the recent B hadron lifetime measurements in the CDF and D0 collaborations at the Tevatron collider. D0 reports a new world-best measurement of the Bs lifetime in semileptonic decays, and CDF presents the most precise Λb lifetime measurement for a single experiment, and which precision is at the level of the uncertainty in the world average of the Λb lifetime.