Grzegorz Maciej Dolniak (Gizh-eh-gozh Dawl-nee-ak; 17 February 1960 in Będzin – 10 April 2010) was a Polish politician.

He was elected to the Sejm on 25 September 2005, getting 12,151 votes in the 32nd Sosnowiec district as a candidate from the Civic Platform list.

He was listed on the flight manifest[1] of the Tupolev Tu-154 of the 36th Special Aviation Regiment carrying the President of Poland Lech Kaczyński which crashed near Smolensk-North airport near Pechersk near Smolensk, Russia, on 10 April 2010, killing all aboard.

On 16 April 2010 Dolniak was decorated posthumously with the Commander's Cross of the Order of Polonia Restituta.

His wife, Barbara, became a politician as well, serving as Deputy Marshal of the Sejm.