Private Investigators in Ontario, CA

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Blue Knight Global Services

1. Blue Knight Global Services

(747) 226-3099

Serving the
Ontario Area


Outstanding company to work for! The staff is always professional. They always pay on time with no issues.

Associated Investigation LTD

2. Associated Investigation LTD

(800) 720-8955

Serving the
Ontario Area


Associated Investigations set up surveillance on a house for me. Gil and Ashley went above and beyond to do the work within my very tight time…

Roman PI

3. Roman PI

(888) 309-0392

Serving the
Ontario Area


I hired Frank to locate someone that I had been trying for 5 months to find on my own. He located the person in an hour! I strongly recommend Roman…

Crown Pointe Investigations

4. Crown Pointe Investigations

(877) 252-4150
12223 Highland Ave Ste 106
Rancho Cucamonga, CA 91739

From Business: Located in Southern California, Crown Pointe Investigations is a premier investigative agency in California striving to achieve results that exceed our clients…

Corinthian Group

5. Corinthian Group

(909) 931-3595
Ontario, CA 91764

From Business: Our Investigator's primary interest is to ensure that all of our clients are provided with a discreet and well managed case. Our clients appreciate that they can…

J C P I & Associates

6. J C P I & Associates

(909) 986-7780
207 W D St
Ontario, CA 91762
South West Detective Agency

7. South West Detective Agency

(909) 930-2973
2443 S Imperial Pl
Ontario, CA 91761
Kalla & Associates

9. Kalla & Associates

(909) 947-3543
1456 E Philadelphia St
Ontario, CA 91761
Tom Wilson & Associates

10. Tom Wilson & Associates

(909) 489-3905
2601 S Bon View Ave
Ontario, CA 91761
Southwest Detective Agency

11. Southwest Detective Agency

(909) 930-2973
3045 S Archibald Ave
Ontario, CA 91761
Double O Academy

12. Double O Academy

(909) 945-3113
4451 Ontario Mills Pkwy Ste F
Ontario, CA 91764
Elite Surety Investigations US

14. Elite Surety Investigations US

(909) 613-1465
12598 Central Ave
Chino, CA 91710
Moreno Investigations

15. Moreno Investigations

(909) 590-4377
12930 Central Ave
Chino, CA 91710
TRM Investigations and Recovery, Inc.

16. TRM Investigations and Recovery, Inc.

(909) 702-8203
433 N 3rd Ave
Upland, CA 91786

From Business: TRM Investigations and Recovery provides professional Investigative Services in the business of locating hard to find assets and an aggressive approach to the…

Roger Garcia Investigations

17. Roger Garcia Investigations

(909) 946-3500
134 N 2nd Ave
Upland, CA 91786
Melendez & Associates

18. Melendez & Associates

(909) 981-2111
123 E 9th St Ste 303
Upland, CA 91786
Watchman Investigations

19. Watchman Investigations

(909) 946-1065
333 E Arrow Hwy
Upland, CA 91785

20. A P I

(909) 931-0562
440 N Mountain Ave
Upland, CA 91786
Xl Investigations Inc

21. Xl Investigations Inc

(909) 628-9574
6651 Hamilton St
Chino, CA 91710
J R Investigative & Security

22. J R Investigative & Security

(909) 276-0282
255 W Foothill Blvd
Upland, CA 91786
Reliant Investigations Inc

23. Reliant Investigations Inc

(909) 944-3095
9421 Feron Blvd
Rancho Cucamonga, CA 91730
Jlr Investigations

24. Jlr Investigations

(909) 727-3100
9375 Archibald Ave
Rancho Cucamonga, CA 91730
Ecmc Diversified Inc

25. Ecmc Diversified Inc

(909) 851-2742
13631 Hammer Ave
Chino, CA 91710
Accredited Domestic Investigations

26. Accredited Domestic Investigations

(909) 724-9694
8407 Via Airosa
Rancho Cucamonga, CA 91730
G4s Compliance & Invstgtns

27. G4s Compliance & Invstgtns

(909) 390-1410
10390 Commerce Center Dr Ste 100
Rancho Cucamonga, CA 91730
Serrato & Associates Inc

28. Serrato & Associates Inc

(909) 548-7799
5690 Schaefer Ave
Chino, CA 91710
Priority West Investigations

29. Priority West Investigations

(909) 948-7021
7365 Carnelian St
Rancho Cucamonga, CA 91730
Detective Services

30. Detective Services

(951) 255-6066
2058 N Mills Ave # 422
Claremont, CA 91711
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