Here is an excellent link from the 'Assyrian Society of Canada' listing most Assyrian, Chaldean and Syriac churches in Canada including cities of Toronto, Hamilton, London, Windsor and others.
Assyrian Church of the East
The Cathedral Church of Saint Mary
161 Skyway Ave. Toronto, ON M9W 4Z5 Phone: 416 213 0344
Parish Priests: V. Rev. E. Audisho, Rev. Yousif Sermez
Mar Zaia Church
182 Hale St. London, ON N5W 1E8 Phone: 519 471 7217
Parish Priest: Rev. Kifarkis Talo
The Church of Mar Mari the Apostle
63 Stone Church Rd. West Hamilton, ON L9B 1A1 Phone: 905 575 3842
Parish Priest: Rev. Younan Marwan
Mar Thomas the Apostle
631 Giles Blvd. E Windsor, ON N9A 4E3 Phone: 519 915 4533
Parish Priest: Rev. Benjamin Benjamin
Chaldean Church
Good Shepherd Chaldean Church
Chaldean Way - 2 High Meadow Place Toronto, ON M9L 2Z5
Phone: 416 746-5816 Fax: 416 746-5850
URL:www.chaldean-church.com
Blessed Sacrament Church - Hamilton
East, 37th Street 305 (corner of Upper Gage and Fennell) Hamilton
Phone: 1-905-977-4880 Fax: 905-645-5654
Parish Priest: Rev. Father Said Bello
St. Joseph's Portuguese Roman Catholic
2451 Old Bronte Road. Oakville
Phone: 1-905-977-4880 Fax: 905-645-5654
Parish Priest: Rev. Father Said Bello
Holy Family Chaldean Church
686 Marentette Ave. Windsor ON, N9A 1Z4
Phone: 519 253 8740 Fax: 519 253 1542
Parish Priest: Rev. Father David Bafro
St. Joseph Chaldean Catholic Church
89 Charles St. London, Ontario N6H 1H1 Tel:519-204-9430
URL:www.stjccch.com
Email:stjoseph@stjccch.com
Parish Priest: Rev. Amer Saka
Syriac Orthodox Church
St. Barsaumo Syriac Orthodox Church
72 Birchmount Rd. Toronto, ON M1N 3J6 Phone: (416) 694-4500
URL:www.stbarsaumochurch.com
Email:secretary@stBarsaumoChurch.com
Parish Priest: Rev. Father Estephanos
St. Behnam Syriac Orthodox Church
1428 Royal York Road, Etobicoke, ON M9P 2A8
Phone: 1-905-385-8365
URL:http://saintbehnamchurch.com/
Email:Info@saintbehnamchurch.com
Parish Priest: Rev. Youhanna Ishak
St. Mark Syriac Orthodox Church
1202 Dunsmure Road, Hamilton, ON L8H 1L4
Phone: 1-905 544-5956 Fax: 905 544-5956
URL:http://stmarkshamilton.ca
Email:http://stmarkshamilton.ca
Parish Priest: Rev. Youhanna Ishak
Syriac Catholic Church
St. Joseph Syriac Catholic Church
999 Lakeshore Rd E, Mississauga, ON L5E 1E5
URL:www.stjosephsyriaccc.com
Parish Priest: Rev. Yousif Abba
Ancient Church of the East
Mar Gewarges Church
510 Rowntree Dairy Rd. (Nineveh Club), Unit 1, Woodbridge, ON L4L 8H2
Parish Priest: Rev. Deudoros Moghattas
St Shmooni Church
100 Clinton St, Hamilton, ON L8L 3K2
Phone: 1-905-545-6602
Parish Priest: Rev. Ninous Ibraheem
Assyrian Evangelical Church
Assyrian Gospel Church
3065 Ridgeway Dr. Mississauga, ON L5L 5M6
URL:http://www.assyriangospelchurch.com
Parish Priest: Pastor Joseph Gilyana
http://www.assyriansociety.ca/index2a55co.html?page=Church%20Contacts
ASHOOR
Assyrian Church of the East
The Cathedral Church of Saint Mary
161 Skyway Ave. Toronto, ON M9W 4Z5 Phone: 416 213 0344
Parish Priests: V. Rev. E. Audisho, Rev. Yousif Sermez
Mar Zaia Church
182 Hale St. London, ON N5W 1E8 Phone: 519 471 7217
Parish Priest: Rev. Kifarkis Talo
The Church of Mar Mari the Apostle
63 Stone Church Rd. West Hamilton, ON L9B 1A1 Phone: 905 575 3842
Parish Priest: Rev. Younan Marwan
Mar Thomas the Apostle
631 Giles Blvd. E Windsor, ON N9A 4E3 Phone: 519 915 4533
Parish Priest: Rev. Benjamin Benjamin
Chaldean Church
Good Shepherd Chaldean Church
Chaldean Way - 2 High Meadow Place Toronto, ON M9L 2Z5
Phone: 416 746-5816 Fax: 416 746-5850
URL:www.chaldean-church.com
Blessed Sacrament Church - Hamilton
East, 37th Street 305 (corner of Upper Gage and Fennell) Hamilton
Phone: 1-905-977-4880 Fax: 905-645-5654
Parish Priest: Rev. Father Said Bello
St. Joseph's Portuguese Roman Catholic
2451 Old Bronte Road. Oakville
Phone: 1-905-977-4880 Fax: 905-645-5654
Parish Priest: Rev. Father Said Bello
Holy Family Chaldean Church
686 Marentette Ave. Windsor ON, N9A 1Z4
Phone: 519 253 8740 Fax: 519 253 1542
Parish Priest: Rev. Father David Bafro
St. Joseph Chaldean Catholic Church
89 Charles St. London, Ontario N6H 1H1 Tel:519-204-9430
URL:www.stjccch.com
Email:stjoseph@stjccch.com
Parish Priest: Rev. Amer Saka
Syriac Orthodox Church
St. Barsaumo Syriac Orthodox Church
72 Birchmount Rd. Toronto, ON M1N 3J6 Phone: (416) 694-4500
URL:www.stbarsaumochurch.com
Email:secretary@stBarsaumoChurch.com
Parish Priest: Rev. Father Estephanos
St. Behnam Syriac Orthodox Church
1428 Royal York Road, Etobicoke, ON M9P 2A8
Phone: 1-905-385-8365
URL:http://saintbehnamchurch.com/
Email:Info@saintbehnamchurch.com
Parish Priest: Rev. Youhanna Ishak
St. Mark Syriac Orthodox Church
1202 Dunsmure Road, Hamilton, ON L8H 1L4
Phone: 1-905 544-5956 Fax: 905 544-5956
URL:http://stmarkshamilton.ca
Email:http://stmarkshamilton.ca
Parish Priest: Rev. Youhanna Ishak
Syriac Catholic Church
St. Joseph Syriac Catholic Church
999 Lakeshore Rd E, Mississauga, ON L5E 1E5
URL:www.stjosephsyriaccc.com
Parish Priest: Rev. Yousif Abba
Ancient Church of the East
Mar Gewarges Church
510 Rowntree Dairy Rd. (Nineveh Club), Unit 1, Woodbridge, ON L4L 8H2
Parish Priest: Rev. Deudoros Moghattas
St Shmooni Church
100 Clinton St, Hamilton, ON L8L 3K2
Phone: 1-905-545-6602
Parish Priest: Rev. Ninous Ibraheem
Assyrian Evangelical Church
Assyrian Gospel Church
3065 Ridgeway Dr. Mississauga, ON L5L 5M6
URL:http://www.assyriangospelchurch.com
Parish Priest: Pastor Joseph Gilyana
http://www.assyriansociety.ca/index2a55co.html?page=Church%20Contacts
ASHOOR