The is a constituency that represents Chiba Prefecture in the House of Councillors in the Diet of Japan. It has six Councillors in the 242-member house.
The constituency represents the entire population of Chiba Prefecture. The district elects six Councillors to six-year terms, two sets of three each at alternating elections held every three years. Prior to the 2007 election the district elected four Councilors in two sets of two. The district has 5,092,741 registered voters as of September 2015. The Councillors currently representing Chiba are:
|- style="background-color:#E9E9E9" ! colspan="3" style="text-align:left;" |Party total seats ! style="text-align:center;" | Won ! style="text-align:center;" | Total ! style="text-align:center;" | Change |- |bgcolor=| |colspan=2|Liberal Democratic |align=right|1 |align=right|3 |align=right|1 |- |bgcolor=| |colspan=2|Constitutional Democratic |align=right|1 |align=right|2 |align=right| |- |bgcolor=| |colspan=2|Democratic Party For the People |align=right|1 |align=right|1 |align=right|1 |-